For me I would mostly be interested in the const case.
Example in an awkward initialization scenario, where a variable should be const (for const hygiene) but can't because of conditions.
But I can also see full erasure being useful in the case of scopes locks if you need them to exist but should not be messed with unless by trivial behavior when going out of scope.
Although I have to admit that the full erasure has little applications.

________________________________
From: Std-Proposals <std-proposals-bounces_at_[hidden]> on behalf of Udo Steinbach via Std-Proposals <std-proposals_at_[hidden]>
Sent: Wednesday, 12 August 2026 15:51:54
To: std-proposals_at_[hidden] <std-proposals_at_[hidden]>
Cc: Udo Steinbach <usenet_at_[hidden]>
Subject: Re: [std-proposals] A new C++ keyword: forget

Again: Benefit?
I don't see an answer on the most important question.

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