If there was ever a time for folk to stop using / delete their Twitter / X accounts it's now.
Continuing to use Twitter / X is basically saying that you're fine using a service that a billionaire will threaten to shut down if something he doesn't like happens (in this case, the outcome of a democratic election).
We'll never know if he actually would have done it (this time), but the fact he thinks it's OK to threaten a shutdown should be enough for you to want to find an alternative.