Artist laid back about copyright is ultimately sure to become more controversial (10)

'become more controversial' is the definition.
I know nothing about this answer so I cannot tell whether this works.

'artist laid back about copyright is ultimately sure' is the wordplay.
'artist' becomes 'RA' (Royal Academician, member of Royal Academy of Arts).
'back' says the letters should be written in reverse.
'about' means one lot of letters goes inside another.
'copyright' becomes 'C' (as in the copyright symbol, a C in a circle).
'ultimately sure' becomes 'e' (I can't explain this - if you can you should believe this answer much more).
'laid' written backwards gives 'dial'.
'dial' placed around 'c' is 'dical'.
'ra'+'dical'+'is'+'e'='RADICALISE'

'to' acts as a link.

Can you help me to learn more?