Questions: 1. why isn't your opinion respected? 2. are you proposing something (as an advisor) or leading as a CTO? 3. do you have internal credibility? It

Questions: 1. why isn't your opinion respected? 2. are you proposing something (as an advisor) or leading as a CTO? 3. do you have internal credibility? It sounds like you are not really the CTO in spite of the job title - if you have to go back and say "see I told you so". Much deeper issues happening here.