This reads like it's straight out of some tiktok bubble. Gaza is a footnote when it comes to the right wing shift. It's a particularly ridiculous theory, because we're seeing the same shift happening all over Europe since long before last year. So clearly it's not because of what videos Baerbock may or may not have seen.
I don't think either perception is necessarily wrong, because a lot of things only started to really break after she left. E.g. propping up the decision to get out of nuclear energy with Russian gas instead of (a harder push towards) renewables. Worked well enough while she was in office, turned out to be a generational mistake when the Ukraine war started. Similar things can perhaps be said about fibre cable internet (that one even goes as far back as Kohl), the broader topic of digitalization, handling the refugee crisis, I guess the infrastructure deficit of "DB", too. She also was quite good at reassuring the public. Where Scholz seems painfully indecisive and uncharismatic, she knew when and how to address the country directly.
I don't think it's as "rational" as an economic short vs long-term argument. Bild and some other media have been running a smear campaign against them for years (if I had to guess I'd say the typical conservative resistance to reform coupled if some good old industry lobbyism). If you believe them the Greens want to ban meat, driving and just about anything that's fun, when they make an economic or fiscal proposial you're going to get a slew of articles that tells you it's going to tank the economy and most of their politicians never achieved anything in their lives. E.g. the heat pump law that you mentioned has been framed as "they want to ruin single family house owners". Then a bit later Merz himself quietly said that the CDU fully supports the general direction and infact there weren't enoug heat pumps installed in 2023.
https://uebermedien.de/94967/ueber-gewalt-gegen-politiker-und-die-grenzen-der-statistik/
top one is all attacks on politicians (e.g. including verbal crimes), bottom one is only violent attacks. Keep in mind the Greens are neither far left nor far right and only the 3rd to 4th most popular party.