You don't become unpopular by doing nothing
But a teacher who does nothing, isn't addressing issues either. They may not be unpopular, but they may not be very effective either.
Sometimes doing something unpopular is still the right thing to do.
When I was at school we got a new head who made (for us) a very unpopular decision. He decided that the school canteen was not going to serve chips every day (chips and gravy was the most popular meal) and would have more healthy options. Fizzy drink cans stopped being sold and water was pushed as the main drink option. You could get pure fruit juice if you paid quite a lot.
We weren't very happy, to say the least. And parents weren't especially happy either. They "didn't pay someone as head to make parenting decisions" I heard from more than one (not mine).
If there had been SM at the time he'd probably have been subject to a lot of abuse.
But there wasn't. So he compromised with the delegations of unhappy pupils to allow chips on Friday and I think another day he allowed something else, that wasn't chips but not quite as healthy as his idea.
And we moaned... threatened to boycott... and adjusted.
Now I look back and realise that actually he had a good point; he was ahead of his time really. The popular meals were very chips/burger/sausages, and although other more healthy options were offered, they tended to be avoided by the majority of certainly the younger ones.
I used to have chips and gravy with one of those calypso-full of artificial colour drinks 4 days a week, and on the 5th pizza with half a can of fizzy (shared with friends).
When he changed I discovered they did quite a nice salad, the soup (with bread roll) was pretty good, baked potatoes and cheese filled you up well on a cold day, the pies weren't too bad, even if they did now only come with mashed potato (which I can't stand) and the fish pie with layered potatoes on top was more than edible and I loved tinned sweetcorn (never served at home).
They'd served all of those before, but I'd ignored them in favour of the chips.
But at the time we hated him for this.