I agree, and to be fair, there are plenty of professional use cases that are totally serviceable with one external monitor and 16GB of RAM. Not every professional is a YouTuber or big data engineer.
I can't speak for anyone else, but I do like it when the name of a product actually means something, because it gives me confidence in the honesty of the vendor.
With NVMe, I'd rather have 16GB LPDDR4X than 64GB low-JEDEC, high latency DDR3 memory. More RAM is still good in many cases, but it's not vital like it was 15 years ago when you'd end up in swap hell or OOMing constantly over a GB or two.
I'm not quite sure where why people seem to be clamoring for more RAM, it seems like a non issue these days. I don't really game these days, and when I do it's on older "steam sale" titles so maybe gamers need it, but even for dev stuff, I just don't see the issue.
It's not my job to help people pick out computers better suited to do the work they were hired for, but I really enjoy seeing the characteristics of and where the bottlenecks are in new generations of hardware.
I'm pretty sure Apple knows what machines it sells, including to video and audio pros, and knows how many of them buy the 32GB options where they're available (in Intel).
Besides "Pro" is just a branding, not a class of machines designed for specific tasks with any specific guarantees.
Up until now, "pros" did just fine with 16GB or up to 32GB max on their Intel Mac laptops, so I'm not sure how "twice as fast" machines, at lower price, with the same 32GB RAM (but much more efficient use of it, closer to the CPU) will suddenly be a problem.
Especially if hardly any buy PC laptops with 64GB of RAM anyway -- and Apple doesn't, and has never, competed with custom tower PC rig makers, but to people looking at the sweet spot of portability, power, battery life, size, weight.