I suspect both sides of the above are generalisations. For sure the second part, of which I can speak with direct experience, is at least in part untrue.
Of course claiming beekeepers seeing the grass is greener is a generalisation, what else could it be ?
What proportion of beekeepers 'hark back with envy' (the whole use of words makes it seem rosy) to those days? No idea really, as most just keep their opinions to themselves, BUT, from the people I mix with (which are from both ends of the spectrum between one hive to thousand plus) there are relatively few (a significant minority) who are definitely seeking to return the area to A.m.m., or what they see as A.m.m.. I will respect other peoples efforts, but do not want that scenario myself.
People being prepared to pay £ 75 for an amm queen suggests quite a few " hark back"
On the other hand we have the number of people wanting to buy queens this year......more than ever before.