homeowner i dont understand the point you are trying to make.
are you saying we shouldnt be thankful every day?
are you saying modeh ani is not a daily expression of thanks?
do you really think the fact that we only say shehechyanu on particular special days as instituted by Chazal that this indicates on other days we do not express our gratitude in many other ways?
do you have a point or are you just trying to find some fault in saftalas very sweet post?