Hello @achim03
I'm glad you took the time to respond.
It must have been difficult for you to write this post but it is very well written and I congratulate you for it.
Yes, It was hard. The worst part is waiting to read the comments. Yesterday the electricity went out 3 times and I was eating my nails to know what was going on!
The later category can become quite angry about it and this casts quite a shadow on the whole process.
You're quite right in what you say, possibly there should be an option within Steemit that would allow the memos to be filtered. But since they are money transactions, it's probably not possible.
You are doing an amazing work here on steem with @crypto.piotr and the project #hope
Thank you for your support and kind words 
I won't abuse memos or tags.