I don't think Rossman is a leftist. He's pro-consumer and sticks up for the little guy against big corporations, but he's not anti-capitalist.

not to turn it entirely political, but

proceeds to use the next few paragraphs to turn it political

Unfortunately, I think you're projecting a bit. He's had interviews stating that he has issues with "both" sides, so from what I can find he seems centrist in his views. Also, he's now a part of FUTO which has hosted him as a speaker alongside others with alt-right tech personalities.

From my perspective, I think he fits the burned out IT professional archetype that is tired of all the BS today, but as far as activism I think he's pretty much only focused on right to repair. Anything beyond that seems to not be in his scope of interest. But to be honest, I would be happy to be proven wrong.

I feel his message is a bit muddied by the overly aggressive tone, particularly to try and reach 'normies'

But he gets results so all the best to him

I hope Samsung gets fucked