No. A decent, but my no means huge, number of people have opinions about this subject. But the number for whom it is a high enough priority issue that it would determine if they would vote or who they would vote for is infinitesimal.
If you're POTUS, you can pretty safely assume you're getting the nomination - safely enough that "losing the nomination to someone in my party" can be ignored as a realistic outcome to any single action. It's pretty reasonable to think about $ISSUE_X as something that might cause a primary voter to vote for one candidate over the other. But the number of issues that would cause someone to vote for the other party because of that one issue is almost zero.
Biden could issue an executive order repealing the NFA and saying machine guns are legal to manufacture and purchase without ATF review, and most hardline 2A advocates would still vote for whoever the Republican ends up being. Trump could have issues an EO making abortion legal at any time and making college free and Biden would have gotten just as many votes in 2020.
Really the only thing Biden has to worry about is not doing so many things his base gets upset about that they don't turn out to vote. There's very little he could do to turn someone from "strong D" to "strong R" at this point.
Correct. Nor do they even understand, or want to understand.
They're going to tell you that 5G implants chips under their skin though...
Regardless of who is doing it, it is wrong. Even if you think its great that <your party> had their political opponents audited by the IRS, investigated and harassed by the FBI, etc. remember that in a few years the party in control can change and those same dictator-like tactics are now available to them to use against <your party>.