I've wondered if there is some cognitive dissonance between the strong feelings I have that scientific journals should be open access and my willingness to buy and use closed source software (even though I run an open source software foundation). But I don't think so.
Fundamentally, I think authors have the right to determine how their work is used. If they want it to be used and available as widely as possible, they should publish it under an open source license and in an open source journal. But when for-profit companies like Elsevier control the journals in which publication is necessary for getting tenure, they are restricting information flow and harming science with no countervailing benefits. Furthermore, many journal articles are supported by government grants, and it's just appalling to me not to have access to the results of research that I am paying for. (If not for https://sci-hub.tw/ obviously.)
I'm optimistic that the author-pays model of funding copy editing will work out and that for-profit journals will be seen in another couple decades as akin to leeching and phrenology.