It is correct. Here is the default assumevalid on mainnet Bitcoin:

https://github.com/bitcoin/bitcoin/blob/11adab39e6019935aa3a...

> Anyway, you see this "full nodes don't validate the blockchain" nonsense a lot from altcoins that think they've found a neat-o way to get faster/cheaper transactions.

I am not saying "full nodes don't validate the blockchain". I am explaining that full nodes (on both Bitcoin as well as Bitcoin Cash) don't validate historical blocks. This would take way too much time, and as I explain in the article doesn't really reduce trust in the software.

Here is the mechanism by which the Bitcoin Core implementation uses "assumevalid":

https://github.com/bitcoin/bitcoin/blob/7f4db9a7c3549a36e45d...