Does Mega Rayquaza's ability, Delta Stream, affect its own weaknesses as a part-Flying-type?

I understand that weather conditions cannot eliminate the “strong winds” (also, that the ability cannot be bypassed by Mold Breaker, but can be bypassed by Cloud Nine and Air Lock) and the condition lasts until Rayquaza switches out.

I am concerned about this part of the Pokédex entry forDelta Stream:

Electric-, Ice-, and Rock-type moves deal normal damage to any Flying-type Pokémon in battle instead of being super-effective.

Since Rayquaza is a part-Flying-type, does this apply to its own weaknesses? Would it, then, be weak to Ice-, Dragon-, and Fairy-type moves (and resist Fire-, Water-, Electric, and Grass-type moves), or would it keep its weaknesses and resistances of a Dragon/Flying-type?

Pleaselog inorregisterto add a comment.

Yes, it keeps its Dragon/Flying typing, weaknesses, and resistances. It still gets STAB on Flying attacks, it’s still immune to Ground attacks, and still resists Fighting, Fire, and Water attacks. Delta Stream removes its Flying weaknesses, but not its Flying typing.

I hope this helps :)