I have been in this great Hobby, on and off, for about 15 years now. I too have seen the changes happening with the decline of flyers at the local Field. But I also agree with the folks that say it is a time of change, not a decline. I think it is very important for Clubs to consider forming a Park Flyer chapter and embrace these smaller planes. I know of at least one Club that is doing this and they are growing because of it.
Please don't condemn the people that don't Build, that is not a good attitude to have at this point. We all need to make adjustments in this Hobby and work together to grow with these changes.