Years ago, there was a presentation [1] by Peter Rizun of Bitcoin Unlimited at Stanford that demonstrated ~100TPS on Bitcoin, and the potential for 1000+ TPS if certain bottlenecks were removed. People said the same thing you're saying back then, but it served to motivate the big block community, and now today BSV routinely does 300+ MB blocks (1000+ tps). This Teranode software is the future of BSV and will become the common node configuration within a few years, so it's worth taking seriously. Also, I left a comment in this thread explaining why this test is more representative than you may think [2].
[1] https://www.youtube.com/watch?v=5SJm2ep3X_M
[2] https://news.ycombinator.com/item?id=27597510