Videocardz reporting on a post from Board Channels that AMD is delaying the plan to retire the B650 chipset due to increasing DDR5. Basically, no one is going to build a new PC due to RAM pricing. So to combat this, they will keep B650 around to keep entry level systems cheaper.
videocardz.com
AMD reportedly postpones B650 chipset discontinuation amid DDR5 price spike - VideoCardz.com
AMD B650 motherboards to stick around for a bit longer AMD is reported to have postponed the end of life for its B650 chipset, reversing earlier guidance