Cookies are not evil per se... but data mining companies made them like that.
I'm administrating an online store and cookies are responsible for the customer's cart, plus their user session / logged in state.
As an admin I adhere to the "golden rule", thus there are no creepy trackers on store. I don't like them and I don't want customers to face the same thing on websites that I manage.
That said, cookies are needed for user session & fraud protection. Instead of nuking cookies we shall kick the trackers out.
There's an extension that allows you to hide incognito mode from websites called Hide Private Mode I'm not sure why browsers don't do this by default (maybe it's some funny compliance thing) it would greatly improve privacy.
It kind of makes sense for strawpoll, because without some sort of cookies, they wouldn't know if the same person is voting multiple times. But they should say something like 'incognito mode makes the votes inaccurate, please visit on normal mode'
I kind of understand this one though, 99% of the time stuff like this is just bullshit. But this is an effort to stop users from voting multiple times.
When is the world going to admit that by and large, internet advertising is garbage and doesn't work? People are far more likely to buy whatever random crap sponsor is on their fav youtuber's videos than anything from "targeted advertising".
Unless I'm really desperate for their content, that's when I kill the tab. The internet is vast, and I can probably find what I'm looking for elsewhere.
The website has the right to choose when you can use it unfortunately. If you don't like the decision, don't use it. Or you could just use a content blocker if the cookies are the issue.