Exactly, thank you for reading the article in depth.
There are many cases where you have a post and need the data of the blocks and all I found use these functions or their predecessors.
https://gist.github.com/jenssogaard/54a1927ecf51c3238bd3eff1dac73114
There are a lot mentions of these functions and I don’t see any alternative.
For example accessing data of Gutenberg Blocks if you have the post:
https://portalzine.de/dev/php/advanced-custom-fields-get-gutenberg-blocks-data/
