Google Flights does not show checked baggage or non-standard seat fees AFAIK
It only indirectly shows baggage fees with certain airlines once you select a specific flight when it offers you a range of ticket options (e.g. with BA, it shows Economy Basic / Economy Plus options).
I'm not sure what a non-standard seat fee is (it does show prices for seat tiers, such as economy vs first class), but it does show baggage fees for me.
Eg extra leg room seats is what I mean. Ie what the person you replied to meant, what you understood when you said all that information is front and centre…
And what did you mean by baggage? Carry on or checked? I’ve never seen it show checked baggage fees. Maybe just estimates in small grey text somewhere at most
