Haven’t had any major apps not work on it. Except one banking app for a while in the beginning, but works now

I had an issue where one keyboard (worked with another one) worked in bootloader, but not when entering the encryption password after that. I believe I solved that by moving keyboard earlier in the module list in mkinitcpio.conf. Maybe something similar would solve your issue?

I have basically the same thoughts as you. The reasons I can think of is:

• Convenience (but SL is pretty convenient)
• Less of a lock-in to one vendor.
• Avoiding filters on sites not allowing aliasing domains (often incorrectly under the label “temporary email addresses”)

I have had basically no issues with my setup: Edgerouter 4 (overkill, had a lower end Edgerouter earlier with no issues except the power adapter died, other hardware was fine). Some pretty basic unifi AP. As well as some cheap dumb gigabit switches. Can basically fire and forget them. Relatively easy to do most things I need on it. Never needed a reboot outside of upgrades. No stability issues, unlike basically all other home grade all in one stuff I have experienced in the past.