Lately, there has been a limited number of YouTube vloggers who primarily focus on bitcoin. Instead, their main interest lies in altcoins. Unfortunately, several revelations have surfaced recently, exposing their involvement in projects that secretly aim to deceive investors. As a result, people's perception of YouTubers, whether they specialize in bitcoin or altcoins, has been negatively impacted.
That's only a small part, but let's look at most of the YouTubers currently successfully introducing Altcoin and Bitcoin with Youtube.
I found many channels that discuss Crypto and indeed not only focus on Bitcoin, but the latest news about crypto, especially Bitcoin and some new Airdrops and tesnets that provide incentives to early adopters.
positive and negative impacts will certainly occur, but it depends on how we filter the content well.
Some of the suggestions addressed to the OP seem to refer to the channel not having to focus on Bitcoin alone because it will give less exposure, because if it only discusses Bitcoin it looks boring. I personally would also get bored, interesting Video Content is content that is not monotonous, so your audience will have many choices of content to watch.
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YouTubers these days very commonly have secondary channels, and YouTube algorithm will recommend them to regular watchers of the main channel.
It seems that everything you are asking is what the OP is aiming for. About the Primary channel and Secondary channel, it is currently widely used.
Those who have a Primary channel that focuses on their content only without mixing about personal life content.
The secondary Youtube channel is certainly a place for Vlog content or the process behind the creation of the main content. it will support the main channel well.