Interesting, older non M chip legacy 13" pro's supported more than 1 monitor. As for a 32" 6K $6K display, this will not beat my 2 x 34" Ultra-wide 21:9 3440x 1440 displays that I picked up for $1600. I'm not a Pro and this is not a pro setup, no point in spending 6k for a display to do large spreadsheets.
And the M1 MacBook Pro runs RINGS around the non-M version in
every other way.
So, pick your poison using devices created in the now-behind-us-Intel-to-M transitional era.
You're complaining about a gap Apple already addressed: In the era of GIANT monitors, multi-monitor setups are relegated to the Pro space.
Two 34" ultrawide monitors is a ridiculously overkill setup for most consumers/semi Pros.
A single one will replace two external monitors, which perhaps is why Apple did the one monitor support thing (I don't work for Apple, so I don't know for sure).
But if you're a Pro (or consumer) that has them and want to use them, the Apple has several "Pro" level machines available for you (besides the legacy 13" MBP you're complaining about).
And so does Microsoft.
So again, pick your poison, but raging against this machine is pointless.