I don't think that's remotely true if you keep the responsive web app simple. YNGNI and KISS and what not. I've been doing this for over ten years. In that time I've seen large web applications built for under 4k; I've also seen massively overbuilt simple applications go for 50k+. It comes down to often how needlessly complex you make the stack. If you stick with solid simple guaranteed tech instead of cutting edge y…
It's YAGNI. YNGNI is unpronounceable.
The word you're looking for is inpronunciable, and it's not exactly as though "YAGNI" is some shining example of pronunciation to begin with.