I think ultimately you will see complaints against almost every service and you will be left with one choice. Host your own. And then that has its own shortcomings. So we can conclude that everything has risks no matter what. It's up to you to assess and decide which risks you can tolerate.

DIY blogging software made from scratch, in 12 hours, with node.JS and Mongo. Anything else would be too mainstream for HN.

how about ignoring everyone and just start to blog?

it doesn't matter how you do it right now, just do it and worry about that later.