Is it actually misleading? AMD never makes claim that their consumer branding relates to uArch. AMD still has Zen 2 in their 'modern' lineups. Intel also has previous generation uArch in current SKUs, and let's not talk about the 10->11 and 12->13 gen "refreshes".
Maybe the technically inclined of us would expect Zen 5 because we're keeping note of CPU uArches but to the general public they won't care. They will just see it's the biggest numbered AMD chip and expect it to be their best offering - which for integrated graphics on the desktop it is.