If someone suggest you with this, its not completely wrong to be ignored.
People looking for WordPress driven site for easy management of website content as well as design otherwise there is no harm using HTML to build a Static website. WordPress got everything, all SEO tits/bits, it is on developer responsibility to make the WP site perfectly SEO. Without proper Plugin or proper coding, the site may bring negative result of your $$ investment on developers to get a perfect seo site.
WordPress powered many well known websites which are highly ranked in SE's. So with a proper coding and management, a WordPress site is incomparable to other, its the best cms to make a seo site. Its on us, how we utilize it.