On a scale of zero to ten, how do you rate ads and captchas? Zero is completely neutral and harmless, and 10 is enough to spark acts of physical violence.
Ads can range from like 1 for relatively subtle ads that are separated from the content and have little to no tracking to 8 for ads that pop-up and obscure the content (I just go back when I see these).
CAPTCHAs can also range from like 3 for reasonable to complete puzzles put at reasonable locations (like signing up for a free account that may be used to spam or similar) to 9 when I have been a customer for 14 years and have purchased hundreds of dollars worth of stuff from the site and they slap them in random flows on the site when I am logged in.
Also the frequency of ads plays a significant role in how hard they are grinding my gears. For example, vanilla YT has become completely unusable because of this. Sites like that are easily above 6/10 IMO.
Those puzzle captchas are a total nightmare. At least 5/10. If they show up in bizarre situations, like the one you mentioned, the amount of annoyance starts at 6/10.