TBP is now proxy software that anyone can install[0] which talks to a central API[1] for torrent listings. Each provider can tailor the experience and add ads or donation buttons as they desire. You can search for "TPB proxy list"[2] to find a list of TPB sites. I currently use tpb.party which I find the fastest and least intrusive.

[0] https://piratebayproxy.info/setup.html

[1] https://apibay.org It has no public-facing site, probably to keep it off the radar.

[2] https://piratebayproxy.info/ is what I use.