Many people have forgotten about RSS Feeds. The big tech mainstream social media platforms with their algorithmic feeds have taken over the role that RSS played, and many websites - while they still offer an RSS feed - do not display their RSS capability.
Also read the comment thread of the article at HN: RSS as a Facebook alternative | Hacker News
Note: You can also subscribe to the various feeds offered by the HTC forum software. Read Instructions for using RSS feeds to catch up with forum activity.