Giffgaff is tinpot. If it was tinpot but much cheaper than its competitors, it'd be an option for some people who are on a tight budget and don't place huge importance on network quality. But in the current market, it's tinpot and there are competitors with better packages and better network features, like Smarty and Voxi. I'm with the latter and happy, with zero intention of switching unless something significantly better comes along.
As for the OP, he clearly has no plans to switch away from Giffgaff, but likes to complain and post. If he was actually being affected by these network shortcomings in some way that was impacting his phone use, then he would have used a tiny fraction of the time he spends making long, rambling YouTube videos to research and switch to an alternative network. The posts aren't worth engaging with.