Whether you're comfortable not being able to flat foot a bike or not depends on a bunch of variables. Like your upper body strength, leg strength, experience level, terrain, bike, yada, yada, yada. I'd be more comfortable on tiptoe or one foot with something like a 375 lb Dr650 vs something like a 600lb Tenere or Stelvio. Depends on the cg of the bike too. Less experienced riders haven't developed the comfort level more experienced riders may have. I don't get you guys that don't get this. You sound like you were experts from the get go.