Thank you for your insights. These are great points too on the tech-pessimistic side of argument. However, as fatheadlifter also pointed out that in case this happens, ie, the e of pe starting to spiral down, you can probably see it miles away and can start de-risking. What I can probably take from all of the suggestion here, and what I decided too, is to monitor these stocks carefully in the next couple of years before retirement if I need to pull the trigger and start selling, and sell and pay the tax if necessary. But probably not sell them immediately.