I doubt they have much public support, certainly from what I've seen on social media, they've basically fucked up. People absolutely hate them. "All these old white retired people stopping people from going about their lives. Somehow didn't feel like protesting when they themselves had to work and weren't retired."
The Canning Town event was a similar turning point for ER, they were well supported in their protests by the general public, it literally dropped to 1 in 10 after that one event.
Its a tricky balance to be struck - I don't think there are many who are against the overall support (although there will be a lot for whom the core reasoning behind it is not clear - Insulate Britain could as easily be about building standards or protecting the older generations during harsh winters) but there are a high proportion who dislike the methods/type of person protesting.
Strikes and protests are meant to disrupt/cause inconvenience but typically you think of striking miners, factory workers etc where the disruption hits the owners pocket - once you start impacting the common person it would seem to very quickly have the polar opposite effect to what is intended and it turns people off.
Even if someone isn't personally impeded by them, there is often secondary feelings around how it is taking up an already stretched police force's time, potentially preventing ambulances or other emergency vehicles getting to places.
They have successfully got some headlines and people know they exist, but what have the actually achieved? What tangible things do they want doing and how much closer are those to being a reality?
Secondly, and this goes for XR as well, people at the protests often come across as unlikeable or unrelateable - it often comes across as some sort of avant garde art piece. There are plenty who are like the carpenter who was on Talk News the other day and are the kind of person many would find some common ground with, but there are just as many, if not more, who are as far removed from those they are meant to engage with that it turns people off.
There was an article the other day (I'll look it up and link it when I can) talking to one of the IB protestors and they were complaining that no one had been locked up yet. Police take them away, take their details, and then back into the wild they go and apparently this is a problem?
I think the gist was that they were hoping to clog the courts with people who could be your gran as that would look bad on the police and govt prosecuting those sorts of people and they have not been able to because the police have not been heavy handed about it.
I don't know about the rest of you, but I've got work and the like to worry about and even for something minor, if I get banged up and that it is not going to do me any favours and so them complaining kind of adds to the feeling that they are "not like us".