The strategy is voting against a short list of very specific individuals, not an abandonment of the party as a whole. If one of them is on your ballot do whatever you can to make sure they lose by any means nescecary.
The damage federal republicans were able to do legislatively in the past two years was significantly blunted by opposition from the democratic party. These worst offender transphobes are threatening to undermine those efforts, and cut the brake lines as it were.
Read Erin Reed's article. If none of those candidates are on your ballot, don't worry about it. If one of them is, keep them out of office by any means nescecary. Think about your daughter when you do it. The harm will come when republicans are able to pursue their anti trans agenda without resistance.
These specific individuals are threatening the only thing that protected us these past two years. The only thing more dangerous than an enemy is a traitor. Please consider that when filling out your ballot if it applies.