It’s important to remember that no lock is entirely unpickable. It’s just a matter of time, skill, tools, and know-how. Generally speaking, if someone is willing to pick a lock, they will be able to pick your lock eventually.
But arguably even more importantly, most people do not possess the skill, tools or know-how to pick a lock and will not try. So you get the same benefit from just about ANY lock for the vast majority of people that might break into your home, in that any functioning lock will deter them equally.
Also, even if you have the most secure door locks known to man, even if they are literally unpickable, that will not keep motivated people from entering your home through other means. Having a perfectly secure lock just means that it become preferable for them to break in through a window, by literally breaking in a door, by your crawlspace/basement access, etc. They could also catch you outside the home and use you to gain access by threat, trickery or theft of your keys.
So, to me, even if a smart lock is less secure than a standard lock they are both going to act as sufficient deterrence for most situations and the tangential benefits of a smart lock can be worth the marginal loss of security. But that’s a choice you have to make for yourself.
Edit: Also, some features can make smart locks massively more beneficial to addressing a break in attempt even while being easier to actually break in. For example, there are can be some secret distress features, like a alert combination that unlocks the door but also secretly alerts the police of a break in. Or notifications that alert you that the door was unlocked even when you aren’t home. Smart locks come with vulnerabilities, yes. But also unique features that you can’t get with conventional locks.