Halo Future

I know 343 studios said they are done with seasons and doing smaller updates which is normal. Fortnite and others do the same thing and I know they are looking to move halo to un real engine also Microsoft is hinting at taking Halo to other platforms and the TV show is on season 2.

Many people online are saying Halo is not that popular yet I still see tones of halo merch at stores and a lot people playing it.

Would Microsoft ever ditch halo?

Is it still there flagship series?