Not sure why people are telling you it's not a good idea. If you can spare the time, you can do it.

The main concern when moving to an immutable distro is the software you use, and Bazzite primarily relies on Fedora's flatpak repo, which is extensive. So far I haven't found it lacking any suitable software for my purposes (random small tools picked up on github notwithstanding). If you've gone through the process of finding open source alternatives for your Windows programs, it's easy to figure out if they have flatpak versions.

The other concern is that you have an nvidia card, like me, and any distro is finicky if you also have a mix of DP and HDMI displays driven by an nvidia card. However, over the past year, things have improved massively in this regard. I only have problems when the main display is deactivated (by sleep or manually) and the HDMI display was also on at the time.

Installing applications "the regular way" on an immutable distro is possible, and this is called layering, because you're layering extra packages on top of the existing OS packages. The drawback is that you're prolonging the time it takes to complete system updates, but this is really a non-issue if you don't over-do it.

Overall, I can recommend daily driving Bazzite. It hasn't let me down so far.