From my perspective, there is absolutely zero baseline from which to quantify such a likelihood. Therefore, I agree to the extent that whatever that likelihood is, it's realistically much higher than what the conventional 'wisdom' seems to be.
Ideally, whatever signing software/hardware you ultimately use with your seed would offer to add a checksum to entropy that you provide for you (some do; some don't).
"The Seven Seas is an ancient expression (the context of which I am now going to ignore; and instead provide a modern interpretation that replaces the definition of 'sea' with the definition of 'ocean')"... how wonderfully woke of her 😂