There are complaints about everything all over the internet.
In my experience, I've never once had a problem cancelling SaaS. There will always be bad actors out there, and maybe Adobe has been one, and maybe they still are, but on the whole I haven't found SaaS to be any worse than anything else.
And it's not really where the economic incentives lie -- someone who is cancelling is someone who is likely to sign up again in the future, so it's generally not in a business's best interests to piss them off.