I have done this job 3 times now , once without the tools and twice with them . Both ways work
I simply like using the tools , perhaps because I like toys
I do appreciate the floating sprockets when I tension the front belt ; no movement of the shafts . I also like using the tool in the front of the exhaust sprocket to turn it to line up the rear sprocket ; so easy
We will all have ways of doing things and choice is a nice feature in life . Calm down , everyone ; we are just doing things our preferred way