I don't think bicycle panniers would have an issue with strength if they were mounted on a proper racks but their aren't any. Once you start adding the cost of racks that aren't made for this the hassle of modifications and bags that aren't made for motorcycles you are going to spend a lot for a non optimal solution anyway.
The alternative is rackless solutions that strap over the seat and fasten onto the frame.
I use the Kriega OS-Base and Adventure Pack system.
https://kriega.com/adventure/os-combo-36
This comes with 36 liters of storage split between the two side bags and attachment points for more to be strapped on. Their stuff is top quality (10 year guarantee) and will last forever.
Mosko Moto make a similar rackless solution.
https://moskomoto.eu/collections/rackless-systems
I have heard good things about their products which are normally cheaper than Kriega but in this case the similar product seems more expensive.
The year model doesn't matter, I have 2020 seat mount indicators on my 2019.