I'm new here but have been frequenting forums since the 90's. It's the same everywhere and since forever.
A lot of people get into a new avocation - learn about it - do it - or don't do it - then move on to another. I can be like that although I've settled down a lot in my later years :~)
I think that the number of ads offering stalled projects says it all. People start out all full of enthusiasm - do the tear out of whatever it is - start in on the build-out and realize that it's not easy - nor is it necessarily a lot of fun. The end result can be fun - but the process is grueling and that's where a lot of people give up. You really see that with vintage campers.
I'm about 80% finished doing a makeover on my '84 Winnebago Elandan - which I think is as close to a bus as an RV can get. Steel skeleton - crowned aluminum roof - GM 454 P-30 chassis - no sticks or staples. This was built as an RV and just doing a makeover has been an arduous task. I've had friends come over and help out for a day and they walk away dazed and confused from working in the tight spaces where nothing is flat or straight or level.
I've come here because I seem to be brain damaged. After the Winnie is finished I want to do it again - to implement the skills I've acquired and add to them. Will it be a Skoolie - a Coach - another RV - I dunno. I'm here to listen and learn. I want a Diesel - my wife wants slides - diesels with slides are mighty spendy :~(
So I guess to summarize - I wouldn't hold it against those who hit and run. Forums are like taverns. All sorts of people come in...some become acquainances - some become friends - some hang around for an evening and are never seen again - some get tossed out on their ear.
Forums - they're just like life