Gold is a metal not a mineral.
Yes bitcoin is code, but whatever encryption man can make another man can break.
Gold has no third party risk. You hold it and its yours, what you class as a weakness is in fact a strength.
I like gold a lot. But, there are some risks to gold: it can be stolen, it may be hard to get out of the country (gold shines brightly in the X-Ray machines) and it may be a little hard to exchange depending on where you are/go.
Re Bitcoin, from what I am reading (not an expert), the math is pretty convincing that the system itself is quite robust. The major weaknesses seem to be when the user (payer and payee) interact. Exchanges, weak wallet passwords, etc.
So, gold is
NOT losing its shine for me. But there are risks in almost any investment holding.