This was extensively discussed in 2020, and in 2021 and in 2022.I chat with few friends of mine who work in the legal field about this. Technically, IRCC has already have it covered by using the simple phrase:
"By submitting the application, I <names if applicant>, to the best of my knowledge, am responsible for the contents and information that I provided..."
and the list go on and on...
So, anyone could "assume" they are qualified and would submit the EOI because in the end, there is nothing happen to them but getting rejected! Furthermore, if I recall correctly, any random person from any random country, if they know and have some time to waste, could submit the form! No ID check, No string attached!
How to sue?
IRCC issues more invitations than seats. This year they are issuing 24,200 invitations for 15,000 seats. So none of the ineligible people are wasting any seats.
I know this is hard to understand due to maths but issuing more invitations is simpler and cheaper and requires no work/verifications of any sort as in-eligible people are already accounted for by issuing 61% more invitations.
If you still cant understand this due to maths think of how people always loose money at the casinos. Hard to see but mathematics and probability works in casinos favor never the players.