I found the learning curve to be:

 
Choices Percentage Count
  Total 491
Easy, I picked it up quickly
83.91%
412
Okay, but I was confused about some things
13.65%
67
Difficult, I still don’t fully understand it
0.61%
3
Other (please specify)
0.41%
2
I haven't found a reason to use it actively, and especially pay for it
0.20%
1
do not use it mich
0.20%
1
Well, it's been a while ! I learnt while you improved it !
0.20%
1
Other
0.81%
4
I only use it for browsing.
0.20%
1
I haven't tried it really
0.20%
1
only used it for browsing
0.20%
1
Its easy, but there are few ux hiccups with the advanced settings for each language.
0.20%
1