Him speaking at the RNC was not in and of itself bad–i heard him justify it later and he made some good points, that there are a lot of exploited workers in the base who could stand to hear the benefits of unions from a union leader instead of just hearing Fox propaganda. But to look at the tax cuts, the benefit cuts, and the tariff outcomes and double down on Trump makes it abundantly clear where his loyalties lie–his own pockets, and maybe his own prejudices.