We are facing the same issue. When having activated Paypal, we are receiving multiple complaints a day by customers that the express button is confusing and many think that we now only accept paypal as a payment option. hard to believe it’s so difficult to provide the option to not show the express button…
we would love to use paypal as a payment option as it is quite often used, but if there is no way to hide the express button, we will definitely not active paypal on our shopify page as it leads to too much confusion and frustration among our customers