Last I checked most places were still arguing over who'd pay for it. Here's a story from Oct 2020 showing London largest housing association haven't started yet:

https://www.bbc.co.uk/news/uk-england-london-51851900

I'd be happy to be corrected. What percentage has been fixed?

"fixing" is not something that could happen over night. It took significant time to define the parameter of risk used to apply guidance on the issues and those are subject to nuance in every unique situation.

There are finite resources and experts and many works take multiple years to implement.

Thousands of buildings are undergoing this process.

Perhaps you'd care to demonstrate your point by providing a list of relevant buildings not currently in this process?

The time span in question is 2.5 years. "Over night" is only mentioned by you.

Why would I need to mention a time span? Everything takes time. The implication of your argument is that this isn't complete or even done at all, which just isn't true

I don't believe you would need to, yet you did. I'm just pointing that out. I don't know whether any of this is started or complete. And I don't believe my comment implies anything of that nature.

The parent comment, to which I am replying, explicitly and unambiguously states very clearly that no action of any kind had been taken

They had to have some meetings to schedule the meetings to finalize the agenda for their upcoming planning meetings? Seems legit...