I made some rods that are similar,noticed no change from 40s to -6F.And that’s in a 4 year span.
The biggest enemy with these rods would be excessive heat and improper storage.Best is to hang rods by the tip(without reel)in a cool place.They like to be stored straight.
I have built icerods even power noodle) for 14 years and have never had one lose action or nor have I had to hang to from a guide.
Use the hook keeper !!
Do NOT store ANY rod with a loaded tip and with the money everyone spends on those ice rods you should have a NICE case to store them..
YES they all HATE heat..so be careful around heaters with icerods !!!
JMHO Jeff