I think, indirectly, gerrymandering might impact the presidential election because a) redistricting can cause polling location changes[1] and b) the voter's knowledge/sentiment of living in a gerrymandered system.
If either a) or b) impacts voter turnout then it could impact the presidential election even though the districts themselves don't matter.
I found some evidence both for and against voter turnout impacts from redistricting[2] or from gerrymandering[3] but it didn't seem conclusive.
It could be used electron more of party X, which could be used to get enough votes to make new laws to try to effect voting on a national level.
It is more tenuous than the others in the list, but I suspect it could be used.
And either way it had the psychological effect of people knowing their vote may not count because they vote for the wrong party in their district and have no chance of their candidate winning.
If either a) or b) impacts voter turnout then it could impact the presidential election even though the districts themselves don't matter.
I found some evidence both for and against voter turnout impacts from redistricting[2] or from gerrymandering[3] but it didn't seem conclusive.
[1] https://stateline.org/2022/05/20/check-your-polling-place-re...
[2] https://da.lib.kobe-u.ac.jp/da/kernel/90008864/90008864.pdf
[3] https://electionlab.mit.edu/articles/gerrymandering-turnout-...