Answer by Dale M for Can the maintainers of a LGPL project use contributed code after the original contributor withdrew it and was kicked out from the community?

Yes

There is no explicit provision in the LGPL allowing it to be revoked and, given its nature and intention, it is unlikely a court would find an implicit one. So, the contributor granted the licence in perpetuity.

Future users would need to comply with the licence which includes maintaining the contributor”s copyright notice (clause 1).