Possibly...but the seller of the pen he links, is a Chinese company called
YuanYi that seem to sell a whole host of various anti aging devices....so at best he is just getting affiliate commission....and how many people are actually going to buy that pen off the back his story? Probably make a few £100 at best..seems a lot of effort with videos to scam...but then again, this is the hairloss industry.
Either way, it looks like Dermneedling is good for your hair anyway, so getting his results or not ill carry on....its half the cost of Trinov and a 1 time purchase.