On LinkedIn photos really should be removed as well, you're correct about bias. I don't put a photo on LinkedIn, and I don't think anyone should. You do not need to know anything about my physical appearance when I'm applying for jobs. This is in sharp contrast to certain countries where you're supposed to take the most attractive photo you can to send it with your resume. I swear to God some of these resumes look more like personal ads.
LinkedIn is still my go-to resource for job hunting, but I want to vomit a bit when I see people trying to turn it into Facebook. Get your validation somewhere else, and let me have a website where I can look for a job.