That is not always true. I made many trades when spread was even wider and I made the most profit percent from it, in relation to the investment.
There is always wide spread at the beginning of a new trade and in static phases.
In my experience the only thing that effect negatively trading is stale market, no volume; wide spread is sometime and effect of it, but rarely the cause.
In wide spread market I just place my trade and if volume pick up and I am close enough to the sweet spot it get fulfilled.
When that happens I start doing the same faster and faster to keep (ab)using the wide spread, until the trades find balance and then the trend starts... then you use your preferred standard trading paradigm.
I also see that "others" are doing exactly the same in many markets and even here... blink blink
Anyway you maybe right in this case, since we still need a minimal volume to trade and this Google sheet is not the most widely known by the trading masses... so post your trade and spread the voice and when it pick up, you may find yourself lucky.
Cheers.