Can they do that using the DNS seed?

In any case few people deny that LN is the answer to instant microtransactions. Even Roger Ver is happy to implement it in BU, as one thing he really hates is the inability to accept unconfirmed txes safely and has stated he will implement LN to address this kind of problem. We still need onchain capacity though of course, but not at the expense of decentralization. Listening node count is down from 60,000 at it's height to 6,000, I can only see that getting worse with a constantly increasing blocksizelimit.