Sailfish in the USA

Greetings! First post here - I have decided it is time to take privacy seriously, and found Sailfish when looking for alternatives to the Google ecosystem. I know gmail has to go (Proton mail seems the obvious choice, but I’ve only just started my research); I want to ditch Google Photos (maybe through network-attached storage, we’ll see how that goes); and while digging into that, it struck me that it kinda all has to start with replacing my Galaxy S10e, as I’m learning that it is quite the tracking device (!). That brought me to either a de-Googled Android OS phone or something running Sailfish. I have sooooo much to learn before I’ll be comfortable deciding, but I like to tinker, and it seems like an important step to take. So far I’m liking the idea of Sailfish, but I figure it doesn’t make sense to pursue it if it is going to be un-workable for the US.

All that to say this: I read this post from May 2024 onward, and it looks like there has been trouble with MMS. With two teens in the family we do a lot of texting, so functional MMS is a must. I’m on an AT&T MVNO right now, but could change that in the future if absolutely necessary (though I haven’t been thrilled when I have looked at Tmobile’s coverage maps in the past). Are there any updates about how MMS is behaving in the US these days? I saw in another thread on the forum (C2 Jolla Community Phone - 4G LTE bands/channels/frequencies - #4 by attah) that the new Jolla C2 phone doesn’t have any of the US bands, which makes me shy to hope that there might be any appetite to have SFOS play nice in the US now or in the future, so I’m worried about building a reliance on it, even though it seems like the OS I’d be most interested in as I make the transition away from the Googleverse. Any thoughts or advice of any kind would be most welcome!