I think some of us would be less "fed up" with the restrictions if we weren't also "fed up" with the lying, gaslighting, hypocrisy, double standards (Cummings), silly slogans, U-turning, leaking things to the press instead of having the guts to communicate outright, treating us like children, conning the students, encouraging to help the economy then berating us for doing so (eat out to help out), not telling us the exit plan, the blatant creep towards an Orwellian state, and now our own phones telling us at any moment "you must self-isolate for 14 days, because someone who tested positive went somewhere you did, possibly after you left"... This is what many of us are really fed up with. We can understand disruption is to some extent necessary because of the virus, it's the shambles of government that adds insult to injury. Having to put up with this is, in a way, a lot more painful than "disruption".
The reason this seems so hopeless, is that there's no end in sight, no light at the end of the tunnel. Saint Boris told us initially "we can turn this virus around in twelve weeks"; it's now been double that, and it's getting worse, not better. It feels as if the original economy-wrecking lockdown was totally in vain; it hasn't solved the problem, and has left a huge legacy of its own (and Saint Boris will be long gone before that really bites).