Yeah, it definitely says something when people claim "The Switch is so easy to mod! Modding has never been easier!", yet the only way to mod consoles manufactured after the launch-day Nvidia exploit was fixed involves hardmodding that 1) requires you to know what you're doing (or pay someone who knows what they're doing, which is legally treacherous territory given the precedent set by Nintendo vs. Gary Bowser), and 2) runs the risk of bricking your console if you mess up at any point.
Considering that there's been no valid softmod method found ever since the original exploit was fixed (and the exploit discovered after that requiring a firmware version that both was quickly fixed and isn't built into to any Switch version by default, rendering it unusable), I think it goes without saying that HorizonOS has been secure enough that bypassing the securities to mod it require risky and potentially-legally-questionable methods. And it's unlikely that will change for the Switch 2 in the near future unless something like Nvidia's screw-up happens again (and this, of course, assumes Nintendo wouldn't account for something like that happening again).