I say over and over again - it isn’t ever worth berating people how they vote. If they want to vote for third party, that is their decision and they aren’t going to view it as wasting a vote. If you want to berate anybody, I’m fine with berating anyone who advocates for not voting at all - that is an absolutely pointless strategy.
As we are both in the “inside” strategy, I think it is much more effective to go after the people that don’t vote (about 40% of eligible voters). If we can get even 10% of them (4% of eligible voters), that would make a huge difference. The Green vote is around 0.5 - 1.5% of eligible voters, Nader in 2000 was the peak)