I still completely disagree, there are not more risks with a hardware wallet, and I don't know how you have reached that conclusion. Any basic assessment of common attacks and their likelihood, let alone a basic assessment of how people have lost their bitcoin, would demonstrate this very easily. An no, losing your backup seed is not a hardware wallet problem, its a self custody concern now matter what way you do it. So pinning that on hardware wallets as unique is not useful or accurate. You can just as easily lose your backup to a mobile wallet (which also happened to me once due to a dead phone)

supply chain attacks are a tiny concern if you are buying from the manufacturer and you buy a hardware wallet that specifically considers that a risk. Let alone simply doing a tally of how many times this has occurred, which is almost nonexistent except for people buying outright scam wallets or second hand off of ebay or something. 

 You can even mitigate the vendor attack vector by using multisig. As long as no vendor has quorum, you can be fairly sure you’re protected. It’s unlikely that multiple vendors will have vulnerabilities at the same time that are exploitable by the same party.