I cannot comment on the closed systems, as I have not used them, but I do think that WordPress is a viable option.
If you just want to write and for the writing to be seen by Google, then you really do not need more than a couple of plugins and you should have a working blog that you do not need to spend any time on maintaining.
In addition to them I would use SEO Framework - https://wordpress.org/plugins/autodescription/ as the SEO plugin and you are set. Just set everything to auto update and there should not really be any issues.
No affiliation to any of those plugins/themes, but have been using GeneratePress, GenerateBlocks and GeneratePress Premium for years and not one update has broken anything for me.
If you just want to write and for the writing to be seen by Google, then you really do not need more than a couple of plugins and you should have a working blog that you do not need to spend any time on maintaining.
I would go with GeneratePress - https://wordpress.org/themes/generatepress/ and its companion plugin GenerateBlocks - https://wordpress.org/plugins/generateblocks/ for some simple blocks to design the blog. Both of them are well-coded and fast/lightweight.
In addition to them I would use SEO Framework - https://wordpress.org/plugins/autodescription/ as the SEO plugin and you are set. Just set everything to auto update and there should not really be any issues.
No affiliation to any of those plugins/themes, but have been using GeneratePress, GenerateBlocks and GeneratePress Premium for years and not one update has broken anything for me.