Yes, indeed. They think that every circular argument is vicious. Not at all, there are two kinds of circularity: virtuous circularity; vicious circularity. Bootstrapping falls under the former. Check [1] and [2]
[2] Brown, Harold I. “Circular Justifications.” PSA: Proceedings of the Biennial Meeting of the Philosophy of Science Association 1994 (1994): 406–14. http://www.jstor.org/stable/193045.
[1] https://www.hipkapi.com/2011/03/10/foundationalism-and-virtu...
[2] Brown, Harold I. “Circular Justifications.” PSA: Proceedings of the Biennial Meeting of the Philosophy of Science Association 1994 (1994): 406–14. http://www.jstor.org/stable/193045.