Looks like the new M3 chips are a significant upgrade from the M1 chips, a very significant upgrade from the Intel/Radeon chips, and a super significant upgrade from the Intel Macs with no discrete GPU. Except for 3D content creation, gaming with games that actually support Metal ray tracing, and video production, it's not that significant an upgrade from the M2 chips.
And I see people on social media bashing it for the default configuration only having 8GB of RAM. It's like they don't realize Apple intentionally keeps a low end, compromised, and cheap configuration around for the large amount of MacBook users that just want a cheap-but-not-uselessly-so laptop for email, social media, and the occasional word processed document. The people bashing it on social media are free to buy a less compromised model; Apple does sell them.