For a blog I think country TLDs are fitting, for other uses it depends on the usage really.
Amazon uses Country TLDs to differentiate local versions from the global "amazon.com", many companies do this, some for GDPR reasons just use ".EU".
However if you are targeting a global audience, a .com might be more suitable.
If you ask 100 people on the street "what's the website for Widget Company":
* 80 are going to answer "widgetcompany.com"
* 15 will say "widgetcompany.co.uk" (or whatever the local country code equivalent is)
* 5 will say "widgetcompany.io" because they saw an ad for you 5 minutes ago.
You're not just spending money to reach those 5 people, you have to spend it to tell the other 95 to unlearn their defaults-due-to-experience.
However if you are targeting a global audience, a .com might be more suitable.