Gravel bike question: tire width and 2X setup

So I’m looking for a road bike with the ability to fit 35-38mm tires IF I want to dabble in gravel. I’m very interested in the Festka Rover, but they’re saying I can only fit up to 32mm tires with a standard 2X setup. If I want bigger tires I’ll have to go GRX or SRAM Force Wide. Is this true? The SRAM site says standard Force AXS 2X can take up to 40mm tires. Thanks!
Today I ordered a gravel bike that has clearance to 700x45 from Obed. Their gravel bikes have GRX but they make an all-road version with 105 (and probably any other non-GRX Shimano) that has clearance for 700x38. Usually the limiter for a gravel bike 2x setup is max chainring size, but with slightly different chain stay geometry I suppose that could manifest as max tire clearance. In any case, I disagree with the sentiment that a 2x setup with a specific FD cannot fit wider tires, although that very well could be the case for the Festka given their specific choices on geometry.