Thanks Starmer, you're a worthless turd and no different than your predecessor.
Rolling that back essentially makes you a prime minister that believes children should have unfettered access to porn, self-harm material, gore, and that the outspoken parents of kids who've killed themselves after accessing this material shouldn't be listened to. At least, that's how the media (on all sides) would spin it. Not really a fight worth picking.
I'm no brexiteer but ... it's not like the Tories were going to hand him the keys to Number 10 and say "Have at it". He wasn't an MP at all at that point.
It's like the "Idiots didn't even know what they were voting for!" argument. Sure, they didn't. Because the people who actually had the power to make a plan to vote for, declined to do so, specifically to increase uncertainty and perception of risk for voting leave.
You can blame Farage and brexit voters for a lot (and you should!) but neither he nor they ever had the political power to make or execute a plan.