And to be clear, this has nothing to do with whether people can change, or redemption is possible, or we should forgive people for not being perfect, or anything like that shit. He still has the fucking tattoo. He's had it for 18 years. Maybe he just got it because he was a young edgy guy who thought it looked cool and didn't really care about its nazi affiliation. But then him keeping it despite his supposed political maturation is very fucking revealing! It's telling that he cares so little about opposing fascism that he couldn't be bothered to have a nazi tattoo removed.
Boys and young men do and say stupid shit. It's a very real problem now that boys growing up today have a lot of authority figures and other culturally influential figures telling them the nazis were cool and good. They certainly deserve an opportunity to learn and to grow and to be allowed to participate in society once they do. This isn't that. Platner grew up watching Saving Private Ryan and Band of Brothers and playing Medal of Honor and Wolfenstein. Platner grew up in an era where literally every authority figure and influential cultural figure told you one or two things about nazis: (1) they're bumbling dipshit losers, and/or (2) they're strung-out meth addicts who got forced into a white power prison gang. Platner's parents were professionals, they almost certainly weren't anything close to nazis. He's not some kid who was raised wrong, but learned better. He thought he could run for a fucking senate seat with a goddamned nazi tattoo. Either the tattoo was actually important to him or he thought it wouldn't be a big deal. Either option is entirely disqualifying.