That’s not unpopular… and it’s only unknown to those that don’t bother to check specs for FD tire clearance. It is definitely a factor among the others that are all worthy of review when someone is spec’ing a modern gravel bike.
Just a couple examples:
Max rear tire clearance for the standard front derailleur, depending on frame design, is 42mm (measured width) for 700c tires. Bikes with tires wider than this using a standard road width chainline can be built using the 1x drivetrain option, or the wide front derailleur and crankset. The Rival eTap AXS wide front derailleurs, made for use with the 43/30T crankset, will accommodate 700c tires up to 45mm wide or larger, depending on frame specifications.
SRAM eTap AXS Wide front derailleurs with 43/30 Wide chainrings will accommodate tires up to 700x45c and 27.5"x2.1" depending on tire, rim and frame variances.