[sneak]

Give your subordinates clear and specific written instructions, eg: "Don't use x technique here, it is unnecessary.". You are the lead, part of your job is to overrule people sometimes.

If they ignore you, or fight with you, that is a different problem.

What this could be is a teaching moment, or series of them, depending on how cooperative or not the team members are.

[toqti]

I get fought and ignored a lot of the time. Hence the back and forth on the PRs. They'd rather show off some cool thing they saw on stackoverflow, having no idea what it does, than learn to do it properly.