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We also have a Discord server and an IRC channel #tasvideos at irc.libera.chat...
You can clearly see the difference. That's only for 67 frames. There are well over 15k frames where this technique could be used and it could end up saving 1 minute in the long run, with a few other timesavers.
Also, this graph shows how it goes when you don't have start-up:

Average speed for SF+blow is obviously superior, but doesn't mean it should be used always. For very short distance (such as reaching the end of a stage) you better use SF only, if it covers the distance.