Breaking and reconnecting modern chains
Shimano chains are still connected using the connection pin and the chain tool. There is nothing wrong about it, just use the special pin. But do not do that for chains that are not made for this and for which there are no special connecting pins available.
So, use the quicklink for SRAM chains. The Shimano pin will probably work, but one does not know how reliably. Some SRAM chains even use special hollow pins or what not so use the approved joining methods.