As someone who ran his own business for over eight years paying close to 30% tax (and is soon going to do it again), I have very mixed feelings about companies using tricks to reduce their tax burden. I mean, I like it when I do it, and I feel justified because there isn't that much that I can claim tax relief from, but seeing a big company paying such low tax rate feels wrong (even though it may be completely legal)…
The issue that that taxes fundamentally bind two moralities: and individual and social one.
Societies generally thrive better when there is a certain level of equality. Not a hundred percent, but enough for social mobility and for people to be aspirational.
No or low taxes remove that opportunity. It bears people from taking an education and forces them in poverty.