That is strange. So I guess they think if sports gambling becomes legal it will be open to corruption?
Certainly hard to fully decipher what "they" think.
What's reasonable is to submit that "they" are currently most influenced by those who have the biggest financial interests in keeping storefront (so to speak) sports betting unaccessible to most of the U.S.
That listing would include, but not be limited to:
1) The various state governments who sell "lotto-style" gambling to the public at large
2) The legal sportsbooks and related businesses in Nevada
3) The offshore sportsbook industry, primarily those which operate in the Western Hemisphere
4) The illegal sports betting industry run nationwide for time immemorial by organized crime. This latter group is likely the most influential in keeping sports betting illegal and in the past few years has begun working in closer affiliation with various operators in #3 above.