i mean, seems you're also conveniently skipping over the part that says:

as long as we can counter them by rational argument

it's right there in the text:

popper states outright, that there are some ideologies and by extension people, that straight-up cannot be argued with. these, therefore, must be excluded from the community, and thereby form the limit to tolerance that must be enforced.

people really love to misinterpret popper...

what goes along nicely with the tolerance of paradox is the quote about anti-semites being entirely aware of how absurd their position truly are:

“Never believe that anti-Semites are completely unaware of the absurdity of their replies. They know that their remarks are frivolous, open to challenge. But they are amusing themselves, for it is their adversary who is obliged to use words responsibly, since he believes in words. The anti-Semites have the right to play. They even like to play with discourse for, by giving ridiculous reasons, they discredit the seriousness of their interlocutors. They delight in acting in bad faith, since they seek not to persuade by sound argument but to intimidate and disconcert. If you press them too closely, they will abruptly fall silent, loftily indicating by some phrase that the time for argument is past.”

take both popper and sartre together into consideration of a larger context and it becomes abundantly obvious that a certain minimum of intolerance is strictly necessary for a functional society.

what happens when all checks on speech are removed can be clearly seen in the rotting corpses of facebook and twitter... it's disastrous.