Bike geometry designed around suspension forks is one of the reasons so many prefer gravel bikes now. A bike designed for a suspension fork has a high front end which hinders you on steep climbs. It hinders you everywhere because a low center of gravity is desirable. I often see mtb riders who can't get adequate weight on the front wheel and are weaving from side to side while climbing their bike fighting them every inch of the way. Nor can you replace a suspension fork with a lower rigid fork without also lowering the bottom bracket clearance and forcing your seatpost/saddle too far forward. If the frame is designed for a suspension fork it will never make a good rigid bike, so if you buy a new carbon frame with the intention of making a rigid bike you'll discover too late the front is too high. Now the high front would be okay if the effective top tube was also short enough to get more weight forward using a long stem, but the crappy "new and improved" geometry they're using already has the top tube stretched to the maximum limit, so forget that. Eventually you conclude these bikes are designed by and for ski resorts and require a ski lift to go uphill. The forward geometry, larger wheel sizes, and suspension mitigates risks for bombing downhill. These bikes are designed to lower the risk of you flying over the bars when the front wheel hits a ditch or boulder. That's the main reason they exist. They're supposed to be passive down-hill rides and you won't burn many calories on them. Now if that's your thing, then fine. If you live at a ski resort and have a yearly pass, and don't want to exert any effort riding a bicycle it's perfect. If you live in a place where there are no hills like Florida they might be okay.
If you're determined to use a suspension it's better to have a fully suspended bike because then the high front is offset by a high rear end, but that also raises your center of gravity. For climbing it's also better to have 26" wheels because the smaller wheels generate more torque using the same output. The downside to this kind of bike is that it will encourage you to go too fast downhill and makes you feel disconnected from the trail. There's also some lateral slop in the suspension. The general feeling is of vague disassociation. These bikes rip up the trail because they go too fast so when the brakes are applied large stones tear out of the ground.
Also, get off my lawn!
