Yep, I noticed the poor mike-handling of the interviewer too, but that's not the main issue here.
Thanks LPChip, for this interesting hint.
I wrote before on this forum about the loss of dynamics being the main problem with MP3 compression, not 'sound quality'.
As the guy says : it's not that making it a MP3 doesn't matter, it's the opposite.
And he had a nice suggestion for giving a recording more 'punch' :
Make a seperate compressed file, and mix it with the original.
Another nice comment at the end : when it's all loud, it's no fun.