Not sure it's an axe, but I do get a bit annoyed by the way some clubs are blinkered to anything except high speed, claim they want to be inclusive, but insult experienced easy riders as novices or improvers or worse on the ride. They're popular with many, but they also upset many and make some think group riding is not for them.
No rider left behind can work but the club needs ways to cope with it if an 8mph rider shows up unexpectedly. Yes, that may mean some people aren't riding full gas, probably not even half gas, but if riding hard is important to you, don't offer to run easy rides and then pull their legs off or go all frustrated.
To the OP, I guess I'd say that the meaning of "easy" depends on the club and most sports clubs have an odd idea of it.
If you want to engage people more effectively, either advertise the rides as beginner's racing rides, tell them they should be able to sustain 12mph on their own for 5miles our whatever before joining and accept it won't be for everyone, or run actual easy rides, maybe in partnership with non-racing clubs.