Honestly, I've been in that exact spot - you know you can pump out content, but you're second-guessing whether it's actually going to land with the right people. The answer is yes, but only if you structure it around search intent, not just volume.
On your competitor angle - Screen Studio and Loom have completely different search profiles. Loom is "video messaging", Screen Studio is "screen recording for developers". Your differentiator (in-browser + effects) sits in a narrow gap. That's a good thing for programmatic SEO if you build pages around specific use cases: "record walkthrough for async team" or "quick studio-quality demo without editing". Each of those is a distinct search query pool.
The pain you're solving - the time/money burn on editing - is the kind of thing that works well in long-tail content. I'd prioritise case studies or comparison posts that directly address that frustration. People searching "too much time editing screen recordings" aren't just browsing, they're ready to try something.
Pricing being lower than Screen Studio is a clear hook, but don't lead with that in content. Lead with the time saved metric. Even a rough "save 3 hours per week" is enough to anchor value before price even comes up.
As for early feedback from a handful of users - that's gold. Use those bug reports and UX comments as the foundation for your landing page copy and for outreach angles. "We built this because we were tired of the same problems - here's how we fixed them for early users." That builds trust without needing a massive ad spend.
To answer your original question: will content yield good results? Yes, but only if the architecture supports it. A few high-intent articles that target the exact moment someone is frustrated with editing will outperform 50 broad posts about "video creation tips". Plan the content around the funnel, not the calendar.