The most valuable part of reddit is always in the comments, as it has over time replaced forums to become the biggest central repository of (mostly relatively high quality) human generated English text data on the internet in discussion format, and even knowing this, reddit has never attempted to have a remotely decent way to search for information in the comments, as post titles can be incredibly vague or irrelevant.
This is the reason why using Google or another external search engine for reddit, because it is the ONLY way to find information in the comments.
If reddit does block Google crawlers, then it would make sense for Google to start prioritizing alternate source of open, high quality human generated data in their search engine optimization, and that would hopefully be the various Lemmy instances, which could be a strong driving factor in Lemmy’s growth in the future.