Taking Trump off the ballot is a positive, but man the text in the 14th Amendment is such a mess it really stretches to see how it could possibly work. There's no specified process for deciding if someone has engaged in insurrection, the idea just seems to be "well everyone knows". Which means of course that anyone can use it to bring insurrection charges against anyone else.
Plus, this is a state supreme court decision, which means it's going to the US supreme court, and I don't think there's any mystery about how they're going to rule. So on one hand you give ammo to Trump and his supporters because they get to say "look! The legal system is trying to keep us down, without even a trial they're trying to pull us off the ballot!" And the case is so weak and such a novel application that it kinda DOES look like institutional suppression of a candidate. Even people who don't like Trump might think this looks like bullshit.
And then on the other hand, of course, you accomplish nothing because the Supreme court is going to say "yeah this is bullshit", again for any number of totally valid reasons that will not even seem like an unreasonable decision.
So you get Trump on the ballot but give him a totally plausible thing he can point to and say "They're trying to suppress your voice, when we claim stolen elections they say we're overreacting and it's beyond the pale, but look they're trying it right now AND they are hypocrites".
This whole thing was such a huge strategic mistake. About the only thing it did was create another court case for Trump to spend money and effort on but I bet it will raise way more than it cost.