When a TXT record data is entered, it is added to the zone verbatim.

a1                                       	IN	TXT	THIS IS SOME TEXT

# kdig +short a1.test4.com txt @::1
"THIS" "IS" "SOME" "TEXT"

This is likely to end up being treated as "THISISSOMETEXT", or who knows what, depending on the client software.
I think that the average user expects to be able to enter THIS IS SOME TEXT and have it treated as "THIS IS SOME TEXT". Perhaps if the first non-whitespace character entered is double-quotes, we can leave the input as-is, respecting the user's intention.