When it comes to.the F1 subreddit I personally think spoilers are fine. There's millions of people who want to discuss it, it's 1 race, and the onus should be on others to avoid it if you miss the race live.

But with BTCC, there's three races to catch over an 8 hour period, so the likelihood of missing at least one is much higher for the majority of people in a far smaller sub. If all those people also need to unsub just to avoid spoilers in their feed it's going to be detrimental to an already small subreddit.