The M4 MacBook Airs are very tempting and I think the size & weight of the 15" is not as offputting as it once was. However I agree with the criticism in this article. A lesser quality display and lacking a little power (M4 Pro option would be nice).
A 14" MacBook Pro is the current draw. Slightly heavier but option for M4 Pro as well as more memory (up to 48GB) as well as nanotexture for out and about.
I love the idea of the Framework 13" machines with Ubuntu. Almost same weight as a 13" Air and with strong upgradeability. Disadvantages (to me) are the battery life on Linux is significantly less than an Apple device (although hard to find exact numbers), and even with the new Ryzen AI Max processors and the DDR5 memory, speed is much lower compared to the M-series soldered on a chip (although I'm open to counter points that this difference in speed is not worth it).
The Apple software ecosystem is a soft grab but to be honest there are options to Apple Photos which is the one I use the most.