We have three Vornado evaporative ones in different sizes -- going strong for more than a year. Easy to clean. The one caveat is that if you twist the water tank when you take it off, all the water dumps out. This is a mistake you will hopefully only make once, lol.
We also had Honeywell Cool Mist humidifiers for years -- they're workhorses (one lasted four years, which is a thousand in humidifier years) but harder to clean.
The worst ever was the Amazon brand one. Leaked water somehow in every direction.
It's not a huge concern, especially if you're not going to be touching the console directly.
But I would still recommend getting a humidifier. I use the Vornado EV100. I'd recommend against getting any of the "misting" ones, as anything in the water (like minerals) will end up coating every surface.
Vornado makes an evaporative humidifier with a wick that works wonders with hard water. I think this one linked has a 1 gal capacity, so less refilling. Also, it has a built in humidistat, so beware it will not work with a control arm, and the top setting is 60%.
Vornado EV100 https://www.amazon.com/dp/B01J79RAXO
Unfortunately I can't find the HCM350 anywhere for a reasonable price. I was eyeing it because it seems like a great evaporative humidifier and I'd like to test one. It's sold out on Amazon, except for a few that are going for double Amazon's price ($130 instead of $65). I don't think there is a new successor to the HCM350 but it's hard to tell.
I'll have to check out the other evaporative humidifiers on wirecutter. The Vornado EV100 looks good, though the tank only holds a gallon and it only outputs a gallon a day. Turns out the EV200 exists and holds 1.5 gallons, but is also sold out on Amazon. Shopping for these things is... frustrating.
How long have you had your HCM350?
Get an evaporative humidifier! I still use distilled water to keep it cleaner, but I don't have to worry about it aerosolizing bad stuff.
I have this one: https://www.amazon.com/Vornado-Evaporative-Humidifier-SimpleTank-Capacity/dp/B01J79RAXO?ref_=ast_sto_dp&th=1&psc=1