In the literal sense? No. I don’t feel like those kinds of laptops are comfortable on my lap.
To be a bit more serious, yeah sure they are laptops, but you tend to sacrifice portability, battery life and comfort. Which for most people are pretty important metrics for a laptop. “Luggable” is a term sometimes used about this class of products.
I’m sure the poster was being hyperbolic. Of course you can find laptops with more RAM and some use cases that 64GB wouldn’t cover. But for most common tasks it’s more than enough.
Then in my experience, Apple did not make a pro laptop for a very long time until the M series came along.
I remember my MacBook Pro from 2009 getting hot enough to hurt my legs, let alone any from the following decade that ran hotter.
If it's drawing 100W then the poor battery life make it more like a semi-portable.
Also given what we know about male fertility I wouldn't have that anywhere near my lap.
I can easily buy a laptop with 128GB RAM, eats more energy (100W+) and is more powerful. It's just that it does not have an Apple logo on it. Does it not count as a laptop?