Some bad and crazy ideas are attached to that label. Also, some perfectly reasonable ones. I’m not sure about “right to repair” because I never know which ones we’re talking about.

On paper, you already have the right to repair things that you own. However, it's hard to materially ensure the right to repair without regulating the market to ensure availability of replacement parts and schematics, ban certain classes of security mechanism, mandate a certain level of openness for manufacturing/diagnostic/recovery software, and so on. A lot of people see any initiative shaped like this (cf. net neutrality, product safety regulations) as little more than an excuse for government overreach, and even supporters can have various concerns about the laws/regulations being worded or implemented in a way that inadvertently ends up doing more harm than good.