No. Tourism is helpful as part of your defense against ideological influence from other civs. For example, let's say you go Autocracy, with the goal of rolling the map for a domination victory. 2 of the other civs go Freedom and 5 go Order -- and 3 of those Order civs are pumping tourism like mad, and are already Popular versus you. They also pass Order as the World Ideology. If you ahve neglected your tourism, such that you are Unknown to the other civs (Unknown from an Ideological pressure standpoint), then you will find your citizens unhappiness skyrocketing, from Discontent straight to Revolutionary Wave, potentially forcing you to change Ideologies and/or losing cities that flip to other civs.
If, however, you pump enough culture to keep them stuck at Popular and churn out enough Touorism to get Exotic and then Popular on them, your ideological unhappiness will fall significantly and you can roll the map with confidence.