Well, maybe i can convince you otherwise.
You see, the first thing you need to know is that you are not voting for a Trailmaker, but for the Trail itself, wich is a valuable permanent installment to get people to excercise and explore together.
Its like when people make a picture of the entrance sign of a park Area. The sign itself isn’t interesting at all and should not be a wayspot, but it serves as an anchorpoint for the Area where a wayspot can be placed down. Same is true for Trailmarkers.
For people who don’t like to go hiking, they’re just stickers, little pastic plaques or small paintings that dont look particulatly appealing and even mass produced. But for Hikers, they are valuable orientation points they can spot from afar to stay on their trail and know their path. Also each trail has their own unique colored symbol to refer to it, so plaques, stickers and painted signs aren’t mass produced at all, but unique to their respective trails and can only be found there. They serve a valuable purpose and make hike trails visible in the real world, so everybody can enjoy them.
Rejecting them is like rejecting fitness stations because you don’t like fitness and to you, those are just ugly metal installments with no artistic value.
Simple Arrows are rarely real Trailmarkers though. Trailmarkers normally have a symbol of the trail on them (wich needs to be verified with a source linked in the supporting info) or the trail name on them.
Another thing you say bothers me a little: You seem to think you have to decide how many wayspots can be in a certain Area, but thats actually not the case. The Amount of wayspots in an Area is nothing that should influence your decisonmaking normally (unless someone is spamming trailmarkers of the same trail every 100 metres or so).
Its fine that you don’t need lots of wayspots. But if there are eligible things in a forested Area, like hike trails, theres no need to be against that. Just like you don’t accept a Rock beside the road in a small village just because there are no other wayspots around, to make the opposite argument.
I think people need to understand that the density of wayspots is nothing that a reviewer has to decide about. “No pokestops around, please accept” is no reason to accepting a Wayspot (quite the opposite, actually) as well as too many spots in an Area is no reason to not allow other, new, criteria abiding spots there. This is simply nothing we as a community have to decide, it is not how the criteria is intended. You wouldn’t decline a nice playground just because “theres already enough stuff in the Area”, and you shouldn’t decline a hike trail just because you think in a forested Area two or three Wayspots per square mile is enough.
Also I strongly oppose Hike trails beeing “low quality”. Hike trails are very good wayspots, as they encourage exploring and sport in groups (all three of the acceptance criteria). This is what is important for a wayspot, not that they’re nice to look at.
When reviewing wayspots, such personal preference should not decide what we vote for or not.
For example, I personally am not a religious person, and therefore can not see the value of a religious community building for wayfarer purposes at all. I could see a beautiful church for its artistic value, but i can not see how a gathering room of a religious group encourages beeing social, as no one not sharing that belief is all to welcome there. Still, I can see that for religious people (and some others too) those places are important to socialize, so I accept them no matter if they’re beautiful buildings or just backyard praying rooms.
Same is true for Hike trails: You personally might not be much of a hiker, but you should understand, that for hikers, those are valuable places to excercise, be social and explore.
So thats my two cents on the matter. I hope you get my point.
Also i want to say that I can appreciate you not decling them anymore and just skip them (if you like to reject some, theres plenty of them submitted without map or verfication of the trail sign that are easy rejects - go for it!), but I think from what you are writing you are willing to learn and broaden your views if you get good arguments to do so, so i felt it was a good Idea to provide you with some.