Has increased the number of politicians that appear speaking well of Bitcoin and cryptocurrencies.
Because this industry is rapidly developing and expanding. It would be foolish for politicians not to use this to their own advantage - drawing the attention of potential followers who might vote for them in the future (and, overall, in terms of public support).
Some even buy, post prints and declare themselves in favor of the financial freedom.
Can put on a show of anything. But what lies deep within them? I mean, are they truly committed to bitcoin, or is it just for show? In reality, those who are genuinely committed don't shout about it in public; they quietly pursue their ideas.
The doubt is, is this real conviction or only a way of promote themselves and gain support of part of the electorate?
I have doubts about the altruism of such intentions. After all, politicians have a very compelling motive, as you said, to secure the support of the electorate.
Is worth trust in politician that says himself adept of the cryptocurrencies or is better distrust?
Well, lets first try to recall a single instance where a politician actually kept their word.

That right there is the answer to your question. Their words should always be met with skepticism, because they say only what the electorate wants to hear. These guys pursue their own selfish interests and do not act for the good of others.
In the end, will they do what they always do and end up disappointing?
There is a 99.9% chance they will disappoint you. At least, thats how it is in my country.
Folk wisdom: listen to a politician, and do the exact opposite.
