I pay no attention to Libre when working out if I have recovered from a hypo. Not because of the delay and the flaw with the predictive algorithm. I was advised that finger pricks must be used to check for hypo treatment because Libre is most accurate at “normal levels” which excludes anything below 4.The time lag is more relevant when I'm already mildly hypo and wanting to know is it going to get worse or has the corner already been turned, because I was taking JBs during the fall.
Likewise, I only take readings over 10 as an indication I am likely to be high and check with finger pricks before and during high corrections.
As is often said Libre is great if you understand it’s limitations and accuracy of highs and lows is definitely a Libre limitation regardless of time delays.