It's a pretty simple thing to do actually.
I call it the bombardier test. If the government did it for bombardier,would people complain?
Low interest loans? Yup
Tax breaks? Yup
Direct financing? Definitely yes.
So what's good for the goose...
You can call it what you want, but it's an historical fact that various groups opposed to one thing or another protest government backing - aerospace, oil&gas, automotive, mining, etc. O&G isn't some kind of special thing, although if you haven't read or seen any people protesting the other things, you would be unaware of it.
It's oil and gas subsidies, 30b worth this year alone.
Again, there is no breakdown and you have effectively doubled down on misinformation (or I suppose it must be disinformation if you have intent to create a mistaken impression). The $30B amount that is repeatedly regurgitated in articles all over the web contains several elements, which you persist in characterizing as "subsidies". What is the impediment to doing the research to make an accurate claim? Do you fear the actual subsidies won't be large enough to make the impression you would like to make?
This is basically the same kind of play made by some people who objected to the first IMPP (Insured Mortgage Purchase Program). They characterized the IMPP as a "bailout", sometimes by itself alone (in which case they were egregiously wrong), or sometimes by bundling it in with other things that looked more like outright transfers. I don't care whether they were ignorant or dishonest; it simply wasn't the case. In the case of the IMPP, the federal government expected (and did make) a profit.
Government loans might make a profit. Loan guarantees might never be triggered. Tax breaks are often deliberate policy intended to shape behaviour. Subsidies are gifts.
There's a particular case for subsidies (as with tariffs) as counter-measures to other countries' economic protectionism. I have no idea whether that's the case, or to what degree. I can guess, though, that the federal government in particular doesn't want Canada's O&G to flatline, and that therefore some of its policy might not just be transferring federal revenues to fatcats.
Governments provide tax breaks, loans, loan guarantees, and outright gifts to many industries and agencies and political groups. They are all different things, and people should avoid indulging in association fallacies by presenting the worst of the group as representative of the whole.