Yes, I agree we should guard our freedom of speech from those who wish to deny it.
Next time a religious preacher from another land is reported to have called for the over throw of our system, and the inevitable dimwits come on here and say he should be imprisoned or worse, we can remember this case and say 'hold on a moment, we are not as backward as Gambia, we can tolerate a different opinion'.
The Christian Missionaries in Gambia seem to have been very ignorant of laws of the land to which they were guests. they pleaded guilty to "...intent to bring hatred or contempt against the president or the government". This sounds widely beyond their remit of spreading Christianity to the heathens.
It is not long ago that Christian Missionaries were actively encouraging atrocities in Rwanda, so you can't blame the Gambians for being a bit wary of them.