I think AMD knows DDR5 is way too expensive and they, until now/recently, never considered to keep supporting AM4, so backporting Zen4 to AM4 is going to take them at least half a year to a year. They can cut Zen4 for AM5 and try to keep using 6nm in a mix of Zen3+ and Zen4 for AM4 and mobile (I can't remember the socket name). As for Server, I'd imagine all big clients are thinking businesses will cut back a bit on expansion during the recession (sensible assumption, not always right) and slow down growth, so both AMD and Intel could be impacted; AMD would be more, as it's been depending on more new designs than current infrastructure replacement/upgrade cycles
All in all, I think AMD read the room and if they also try to attack the lower end first, then they'll survive the storm approaching, because make no mistake: a recession will hit Europe pretty darn soon and the USA is in no much better shape. So, brace for impact
Regards.