The matter of identity politics is that it can be done two ways, one is an isolated view on which each oppressed identity seeks an, often short sighted, improvement of their reality dissociated from class struggle or even other identities struggles, this way is absolutely damaging to any sort of impactful struggle.

The other, and better, way of doing it is an identity struggle that looks into how that targeted and specific oppression relates both to the broader wide reaching class oppression, and to other similar specific oppression, in a way that multiple oppressed identities see each others as allies instead of rivals, and hopefully they'll see the ones fight class oppression as allies as well, in that way the fight is stronger with more support and aims higher.

Just as a footnote, the first and undesirable way of identity struggle , is likely to have been developed organically, but any sort of reactionary force that identifies how damaging this sort if struggle is to a unified class struggle, they'll nudge and amplify this version whenever it's convenient, makes them look more humane on the surface while still contributing to oppression. So it isn't a conspiracy but it's likely amplified by our enemies at times