I have been on one big ride on here where folks got lost. Having said that I too don't like feeling I am on a guided tour in a sea of yellow. I have been on trail rides with a big group (20....don't even ask!) where my own refusal to wear yellow resulted in folks getting lost (but the circs then are different and they deserved it
)
I think some may think the markers are some form of an elite clique. Maybe. BUT without them you run into trouble. I have had more than one occassion where someone has contacted me and said 'I'll tail end your group for you' and then they don't have a clue what the route is, despite their assurances. Yes, they wanted a bigger role, but it resulted in more hassle for me. It's also surprising the numebr of folks who have neither a clue where they are or can apply common sense with directions and locations. And don't even go to can they read a map!
Its all very well wanting a go at marking, but if you have any uncertainty you are much better just enjoying the ride.
Ok, I know marking can be thought of as not needing to know the route, as the leader and TEC will do but in a large AR type group if you don't you are asking for trouble in event of breakdown, problems, the unexpected that will usually happen. Remember also some of these people will be those who have proven they can troubleshoot a bike problem, mend a tyre etc. Would you rather be stuck with a marker who would call the AA or one who might check if your battery lead has just fallen off? In a large group that is also a consideration.
For me
its the call of the run organiser and when I occasionally have organised a run to be able to relax you need people behind you you can trust, there's plenty to do leading a run and I don't think some folks appreciate it. Its also at times especially when you have new people rather stressful, which people should bear in mind.