If you follow live sports then Twitter is still unparalleled because people (and broadcasters too) upload highlights in near real time. Every event, goal, home run, crash etc.
They are aware:
https://jobs.gem.com/bluesky/am9icG9zdDqRK9D8osOaeyyESJ7cPsX...
Job opening to build sports relationships.
For high-level football/calcio/soccer at least, Reddit is and has been better for a long time. Often goal and other key highlights are uploaded before the broadcasters.
There's an absolute ton of niches which are completely anchored to Twitter. It's hard to get a whole raft of people to move at once :(
This is massively true and was the last thing that I had to overcome when dropping Twitter. Certain sports have better engagement than others but it is pretty staggering the difference. If BlueSky could figure that out then they would have a legitimate shot at substantial success
Are there tools that let users post to both simultaneously? (e.g. similar to how streamers can simultaneously stream to Twitch/YT/X easily)
True, but the BlueSky audience is not really into following professional sports. I believe there was statistics (or just rumor) showing that conservative-leaning people are about 50% more likely to follow professional sports than liberal-leaning people. Sadly, I cannot find the source, but it might be so obvious that nobody bothered to run a proper poll. Or this is just what everybody believes so everybody goes with it.