The TLD registrar has enormous impact on you regardless of DNSSEC, and people just seem to put up with it, much as they put up with having an awful US state government, or a terrible HOA, or dozens of other problems.
For ccTLDs you could hope, especially if you are a citizen of the country encoded and it's a democracy, that you can vote for governments who require the TLD registrar to meet your needs. Will that work? Well, no worse than them ensuring adequate drinking water and that sort of thing.
TLDs seem primarily to be chosen for existing popularity, so no matter how badly COM is run, people will insist they want a .com domain, and then complain about how badly the TLD is run. I don't see DNSSEC ever making that substantially worse.
Suppose you paid $50 last year for theamk.example - what sort of abuses could the example TLD already do - ignoring DNSSEC entirely ?
Somebody has decided to register the\u{0251}mk.example, the\u{0431}mk.example and now the\u{ff41}mk.example - your TLD's policies say that they take this sort of thing "very seriously" and they try to ensure that after they've been paid in full for the domains they get around to removing these bogus sites used to attack your customers just as soon as you file the necessary paperwork, plus 90 days admin.
They might tell you that somebody else offered them $5000 for theamk.example and so too bad now it's not yours any more. Can you fight them? Yeah, and eventually you might even win, but meanwhile your domain isn't working. I hope you didn't need that.
Oops due to an "error" theamk.example just doesn't resolve any more. Don't worry though, they aim to fix such errors within 45 days. Or you can pay for $25 Expedited Support ?
Oh no, apparently "Theamk Inc." in Beijing says you are squatting on their rightful trademark which they registered last week in Bulgaria apparently. The TLD registrar has decided to immediately transfer your domain to them.
