It was a stand alone story. If you want science in your sci fI go to the Star Trek universe (I do).
Star Wars does basically no science explanations. It’s a swashbuckler plain and simple that just happens to take place in space. If you want to complain, The Last Jedi was the worst POS ever released as Star Wars.
I liked Solo. I didn’t like the actor but I liked the story. They should have gotten Chris Pratt to play Solo. He fits the bill
The point is that the hyperdrive weaponization destroys the rationale for the rest of the franchise... all these people are adventuring to do things that can be mooted simply by pointing hyperspace weapons at big ships and death stars.
It’s not a hard-science question - it’s a question of internal story consistency, which there can be none without discarding SW8 as non-canon completely.