Do seo sellers just accept every client?

k2h2, no accepting every client is usually where providers create their own problems. Filtering is part of the job, not a luxury, because expectations, budget, and risk tolerance matter as much as the work itself. The most sustainable seo operations are built around alignment, not volume, and saying no early is often what protects both results and reputation.

As long as they aren't scammers or having bad manners they are in

Definitely don’t accept every enquiry.
Early on it feels tempting, but bad-fit clients usually cost more time and energy than they’re worth.
Simple filters around budget, expectations, and communication can save you a lot of stress.