No.
One of the major distinctions being – CBP cannot deny a green card holder to enter the country. They can try pressure tactics to 'convince' the person to 'voluntarily' give up their green card but, if they don't sign anything, they will still be let in. If there's something off about their case, they may be referred to an immigration judge, which is the only way to revoke a green card (barring some fraud detected by USCIS).
Contrast that with visas. They are entirely at immigration discretion and can be canceled at any time, including at the port of entry, for any reason. Visas which grant work authorization still have the SSN restricted and it's tied to whatever authorization the person has. A green card holder can remove the SSN restriction and their SSN is exactly the same as a citizen.
Really, the main differences are that a citizen can hold some offices a LPR cannot, the ability to vote, and no requirement to renew anything. And, most importantly, no residency requirements for a citizen.
As you point out, naturalization is more difficult to remove, but green cards aren't that easy either.
For eg. Some green card holders live overseas. They are required to visit here periodically to keep status alive.
I know of cases where their green cards were revoked
The "basic US presence" requirement of green cards has always been present in the validity clause alongside the 5-10year expiry date, and not committing immigration fraud and other basic requirements to maintain green card -- a comical number of European green card holders gloss over/forget this clause every year, that is made explicit to them upon receiving the card and proceed to forfeit their green cards by not entering the US for over a year -- that is not a revocation (implies a subjective decision made by an official), it is a lapse of validity (implies some pre-stated condition was fulfilled).
I think most non legally inclined people (like me) would say CBP yanked my GC.
Your point being that - nope, they just enforced the law.
Right?