For Peertube specifically yes, if you're seeding it (opt-out if your browser supports it). However, this concern is mitigated because Peertube uses open standa

For Peertube specifically yes, if you're seeding it (opt-out if your browser supports it). However, this concern is mitigated because Peertube uses open standards, so it's very easy to use various proxying services for privacy concerns. It's unlikely that any such 3rd party clients will ever get blocked. Comparing to Youtube: a single malevolent company tracks everyone's actions for nefarious purposes, purposefully changes internal "protocol" regularly to break 3rd party clients (youtube-dl, Newpipe) and blocks scrapers and other archival systems. Overall, Peertube has much more privacy-friendly capabilities than Youtube ever will have.