I’ve just bought a 7D II last week. Because the 90D has too many reports of focus weirdness and the weatherproofing’s not as good, but also it was £1350. At the very top end of my budget - an R5 is literally £1000 more expensive than me buying both this 7 and a 5D iv as well for if I were desperate for the extra width full frame would give me.
Yes, a 400mm f/2.8 is the cost of a small car, but my second hand mk 1 100-400mm was £600 and works just fine, thanks. Not everyone has the budget for this new mirrorless world.
My main thing, though, is that all the glass in my regular bag (ie not raiding my son’s hand-me-down primes) is EF. As is the case with most of Canon’s best pre-RF lenses. I really couldn’t care less if an R7 never had a dedicated range of crop-frame lenses, because I’d rather be ready for whenever I could supplement it with an R6 for wide shots.