It doesn't have a centralised marketing department. But the bitcoin community seem to spend an inordinate amount of effort trumpeting its merits (users of fiat just get on with it).
The absolute irony!

I don't accept that to be true in any way, shape or form. However, here on AAM I would say that an inordinate amount of time is spent by the Duke in smearing Bitcoin at every opportunity....oftentimes misinterpretation, misrepresentation and downright inaccurate supporting information. An inordinate amount of time is spent in clearing up those inaccuracies just in case some poor soul comes along here and takes what you write as fact. You're doing it right here once again - this thread is supposed to be about Gold backed cryptos - not about bitcoin.
As regards 'users of FIAT just get on with it', for real? FIAT has been around for donkeys years. It's nothing new, people understand how it works. Like it or loathe it, Bitcoin is a new Fintech development - an innovation that is still fluid in terms of it's development. Therefore, there is reason to discuss it as it's changing - everything about it is changing and evolving. Whether it succeeds or crashes and burns, there are a lot of new developments with it - on a daily basis.
They do so in quite a misleading way focusing on the supposedly wondrous technology of blockchain.
See above. It's a bit rich you going on about crypto enthusiasts being 'misleading'!
Blockchain has nothing to do with the worth of bitcoin in the same way as the commercial vehicles which distribute goods have minimal relevance for the value of those items.
You're falling in with your banking world buddies as this is currently their strategy i.e. the line that Bitcoin (and decentralised crypto's) are bad and blockchain is good. You can try and separate them all you like but it doesn't wash.
Google bitcoin and you will be bombarded with enticing images of gold coins with a B type dollar sign.
I have to commend you on your trolling skills

I just googled 'bitcoin'. As is standard with a google search, they return an image or two at the top. If it has to return an image, what else is it going to be other than that contrived 'coin' or BTC symbol? As regards articles on the subject, articles rarely come without some sort of artwork or stock photography. What would you have them use exactly? The result that was returned with the 'bitcoin coin' image links to an article from the UK independent. I scan through crypto reports on a daily basis. I've yet to see a positive report related to crypto in the UK independent. Is this the propaganda and 'marketing' you're talking about?
That sort of marketing, if it was centralised, would rightly be found in breach of advertising codes.
Interesting. Why don't you contact the UK's Independent Press Standards Organisation and complain about the Independent? Otherwise, you might be interested to note that the Central Bank of Poland paid an entity that ran a youtube channel to make a video castigating bitcoin. Aside from using public money to do this, there was NO indication on that propaganda that it was sponsored by the Anti Cryptocurrency Central Bank. Is this the type of propaganda and 'marketing' you are referring to?
Everything is not all sparkling in the Crypto world. There are many things that are far from ideal. Naturally, this is reported and discussed. However, there is no doubt that there is an inordinate amount of Fear, Uncertainty & Doubt (FUD) being spread which is unfounded ...by people and entities with a vested interest to talk crypto down.