However I despise deceitful marketing as well. I am also not a big fan of the way my company markets itself. It is neither deceitful nor misleading, but just ... irrelevant to people working in the space and thus hard to align with.
But I also know companies (that we have worked with) who spend their marketing budget on hosting small-ish conferences and choose to post content from their (technical) blog in their LinkedIn. For me personally, that way of marketing themselves just inspires more confidence than ... overconfident salespeople.