Is that split of sales or split of stock? And, again, source.
That tweet says the opposite, 80:20 in favour of analogue.
"While PlayStation 5 production has a very solid 80:20 ratio between disc and digital on a global basis"
Sony weren't supplying many digital units at all, forcing consumers into buying the analogue and ensuring analogue made up the majority of sales. Conversely, half XB sales were S which is all digital, so lack of the physical option there wasn't observably harmful to sales.
For all PS5? The thing to look for is the how PS5 Slim sells. In only making one hardware device, Sony have streamlined their capacity to balance and will presumably adapt production accordingly, whereas previously they had to commit to drive or not. If consumers prefer physical, they'll either choose the physical bundle or buy the physical peripheral. Sony will start adjusting supply of digital and analogue SKUs to accommodate consumer preference. We'd then see people buying digital and then the separate drive. If digital sales are high and optional drive sales low, that'll show a disinterest in physical games.
Current install base isn't that telling because it was heavily influenced by what Sony provided.