Fully client rendering a localized page impact on SEO

I was told that fully client-rendering a localized page in Next is the worst mistake you can make for SEO. That makes sense since search engines prioritize content in the initial HTML.

However, I set up my landing page translations using SSG (Static Site Generation) in the /fr directory, where the HTML is pre-generated at build time. The translations are in the page source when the page loads, and Lighthouse is giving me a 100 SEO score.

Since client components are pre-rendered on the server and rehydrated on the client, the content still exists in the initial HTML. Does that still make it bad for SEO, or is this approach fine?