Gutting SS is just a leftwing talking point and not something the party as a whole is trying to do. The polls show Republicans aren't united on abortion. Trans rights is another one that isn't defined and offers no context. Same with "book bans".
The GOP as an institution is very united on abortion, though, yeah, voters are mixed (similar with Democrats but reversed, BTW). The House Republican Study Committee, which has 176 Republican Congresspeople on it, proposed cutting SS by ~$720B over 10 years (and more beyond that) just a few months ago. That's been a continuing theme, and realistically, deficit cuts aren't going to be possible without either tax increases, which Republicans all pledge never to support, or cuts to SS/Medicare/Medicaid. Fair on trans rights not being defined, but given that opposition to trans people has been one of the most frequently discussed issues of Republicans, I think it's a bit disingenuous to deny that they have any interest in taking legislative action against them.
As for the environment, I don't think anyone wants to live in a polluted wasteland. I think a lot of people look at things going in a Cali with their emissions goals and see big problems with. I think any sort of regulation toward green energy without include nuclear is ridiculous.
The IRA was a major bill that includes subsidies for investments in reducing GHG emissions, along with mitigation efforts (like seawalls, infrastructure improvements, etc.), plus new regulations around power-plant emissions, and more. It was unanimously opposed by Republicans in Congress. They've often talked about a kind of Luddite, pro-coal movement, which would contribute to a polluted wasteland. We can also see this at the state level, where a lot of red states have laxer environmental protections (and higher pollution levels as a result).
The TS is clearly talking things that aren't supported by the majority. He brought up Haley talking about raising SS age in the debates. Meanwhile RDS said the opposite in the same debate. Why is it Haley's opinion is the republican stance but RDS's opinion doesn't count? Should every whacky idea from the squad be considered the Democrat's main policy positions? Beto O'rouke wants to tear down the walls around Texas. Stacy Abram's is lobbying to outlaw gas stoves. Is that where all democrats stand?
But, again, raising the SS age *is* the majority position. See above (the RSC). I agree that picking just one person would be the wrong way to go about it. I think it is politically toxic so they kind of tend to waver back and forth between insisting we need to cut SS (or raise the age) and angrily denying that they support that position. The other move they pull a lot is promising huge, unspecified spending cuts, and then when anyone tries to do the math to see how it could work, they deny supporting that (fundamental issue there is that the general public stupidly supports cuts to spending in general but opposes cuts to any specific category of spending).