Going by rate of blog posts by year they don't seem any noisier than usual. The opposite if anything. 18 this year and there's only 3 and a bit months left of the year whereas in 2018 they made 60.
Noisy? Bit odd to call it that. Also, from my perception they were always present with regularly published news about how they improve or just update/change their service.
Not sure what you mean, they've been posting fairly regular updates on software and infrastructure improvements and security audit responses on their blog for the entire time I've been a customer (6 years).
They've been relatively quiet on their blogs actually, its just that its growing in popularity, so more people are talking about it.
Imo what makes it so good is their pricing scheme. You put however much money you want in your account, and you get an equivalent amount of time. All you need is an account number, no email no contracts no hassle