Official post on their company blog (no idea why they reposted it on Twitter verbatim, that's bad SEO, ironically): https://www.perplexity.ai/hub/blog/agents-or-bots-making-sen...
i guess it will come down to browserbase corroborating the claims.
i also tend to agree with the concept that scraping != consuming on behalf of a user. they explicitly point out that they do not store the data for training, which would fall under scraping by proxy.