Hey all, a rare post here but I wanted to get some opinions.

Am working on a (low-tech) piece on client diversity -- somewhat of an old discussion in Ethereum and perhaps with renewed debate owing to the January outages of two clients, which led to minimal impact, only because of a collective 15% odd share of total clients in use.

A completely different network (PoS possibly the major difference of relevance) of course, but I wonder if there ever has been any discussion or similar concern for a client supermajority in the Bitcoin network? Cursory web searches don't throw up much at me, though the 2010 value overflow appears (to me, at least) an example of how a lack of client diversity in Bitcoin could lead to network failure.

I suspect it isn't an issue for Bitcoin, but I can only guess it's because the network and Bitcoin Core itself is highly fault tolerant, or is extremely agile in detecting and patching. In any case, far better than in 2010.

Geth's 46% or so client share in Ethereum seems to be a big worry but pales to Bitcoin Core's 98% dominance.

Hoping for some light shed on why this comparison, and Bitcoin client diversity, is irrelevant?