Hell to the YES!
When losing, most stick to very low carb diets, but once reaching goal, start introducing them back within reason, still eating protein-forward for the most part.
There is room on this earth for all of God's creatures..
next to the mashed potatoes
The long term answer is yes but I've found that things are easier as time goes on. I just passed 6 years and there are plenty of things that I can eat now that I found inadvisable to eat my first year. Much more prone to gas and quick BM's from sugary and high fat foods the first year. While some of that never went away the urgency is mostly gone.
I was reluctant to stray too far the first year but surgery in April and by Thanksgiving / Christmas I was OK to have a taste of a sweet potatoes and a small bit of pie, or a cookie at Christmas.
I do watch closely now and move back to a mostly protein regimen if I see I've gained a little. I'm currently hovering around 220 from a surgery weigh of 464 so maintenance is going OK for me.