Game Director for WoW, Ion Hazzikostas has clarified on Reddit that the Dragonflight Fated Season 4 will have a Dinar-type system similar to the one introduced in Shadowlands.
His earlier comments in the Icy Veins interview about the system being 'too generous' was in reference to applying that loot system broadly across all seasons as they'd like to avoid vendors being the default way to acquire the best gear in WoW in every season.
Icy Veins Developer Interview Recap
Not sure if I misunderstood the question or the summary was inaccurate, but either way:
There will absolutely be a Dinar-type system in Dragonflight S4. We don't think it was too generous in SL — it worked great.