I tour once or twice a year here in Hawaii. My rides are not too ambitious, between 3 and 5 days on the road. I have not yet invested in a high end touring bike. I used an ancient Team Fuji (re-geared for touring) for years, then a Giant MB (which was stolen), and most recently a very inexpensive Trek (model 3500) . All have served me well. On my last tour I climbed to the summit of Haleakala, a 10,000 foot climb, on my Trek 3500. It handled a full touring load fine, was very comfortable, and performed great.
Someday I may purchase a true touring bike, but until then I won’t hesitate to tour on my Trek.
Tom