TL;DR version
The way all food on earth is made is wrong not just meat.
Long version
You realize everything on this planet is mass produced to such a degree that they throw out BILLIONS of tons of food each year. Not talking just about meat, I'm talking EVERYTHING from meat to vegetables and fruit, to canned goods even when they have and expiration date of 3-5 years non refrigerated.
Ever wonder why with all the food thrown out each year there are people starving in so many countries around the world? Do you think Big Food companies are ever going to provide water and food for free to these countries? It all comes down to money in the end.
The problem is not just with meat products it's with everything being mass produced by machines at dazzling speeds each day. To fix the issue with meat over-production you would need to first fix the fundamental way of thinking that Big Food companies have where quantity not quality is the focus. The problem at the end of the day is not there being too many vegans or too many meat eaters. It's about these companies wanting to be richer and richer and making so much that it causes damage on a global scale. They all know they are causing irreversible damage to the planet, trust me. They just. Don't. Care.
All and all more companies are starting to focus on quality as people have gotten sick over time ( literally) from the mass produced garbage they feed us each day. So hopefully in a couple of decades this will no longer be such a big issue.
Actual thread answer
I like both meat and vegan stuff, me stopping to eat either or even 5 million people doing so will not change the way food is produced, and people are not carnivores or herbivores, we are omnivores, we can eat and digest almost everything. Morally people can do whatever the hell they want but in the end it's just preference, getting moral about what you eat is not going to change the main problem with food production, it's equivalent to an angry toddler stomping their foot real hard.