Indeed, the names are very similar, so it is not surprising that the mistake is reproduced even by news websites.
As for the software it has been discussed and it is officially known that they use the same service:
https://betb2b.com/Betb2b is an innovative platform for the rapid establishment of bookmaker products. Our clients include world-renowned bookmakers such as 1xbet.com, 22bet.com, 1xbit.com and betwinner.com, among others. The companies that have been created on our platform serve over 1 million players daily.
Don't you think it's more likely that 1xbit and 1xbet are both owned by 1xCorp and it's naturally in their best interest to publicly distance themselves from each other since their combined reputations is worse than each of their reputations on it's own? Plus, it shields the owners legally.
Are you seriously going to keep going down this ridiculous path, bending over backwards to defend the site that pays you for advertising space in your signature?
1xbit support declares that 1xbet and 1xbit have nothing to do with each other, except a similar name:
^^ This has to be one of the weakest, most pathetic argument you could try to make. It's the word of a shady casino vs tons of evidence to the contrary.