However, as you get older, develop wrinkles and grey hair, that appearance of being older far outweighs your experience in initial impressions that you make. I've personally been a software engineer since 1995, quite a while now. My hair is grey, my face has wrinkles, and I'm an expert in several domains. When I go interview for a new job, it's typically by people younger and less experienced than me, since I'm definitely past the median age in this industry. I get asked questions like, "do you feel you still have relevant knowledge", or "we do things differently than in your day", or "do you think you can work in a fast paced environment", etc.
Tech is arrogant and judgmental and image matters a lot. I can understand how people might resort to plastic surgery to buy themselves a few non-judgmental years.