If there are better alternatives entirely depends on how active those people are on Mastodon, Bluesky or even Threads. (Not sure on activity on Bluesky, as I haven't got an invite yet...)
I'm a PHP developer, many people (but not all) in the community crosspost on Twitter and Mastodon, so Mastodon is a good alternative for me personally.
Firefox is my daily driver, but oooh how I miss native tab groups like they have on most chromium browsers right in the tab bar. Extensions like simple tab groups just hit differently and are inferior...