What version of Quicken Mac are you using.I have Quicken Mac 2017 and I've set up REPORTS > Category Summary > Customize and select THIS YEAR and selected just the investment accounts.All your dividend reinvestments, short term capital gains and long term capital gains will show there. You can select taxable investment accounts or taxable and retirement accounts, if you wish.Quicken Mac will save the reports for you to refer to later.Additionally, you could run a Tax Schedule report and your Schedule B and Schedule D transactions will also show there for your taxable accounts.
Qmac 2018 does have the ability to export register transactions to a CSV file. One can filter/sort the transaction register as desired and then export.From the menu bar - File > Export > Register Transactions to CSV File...The link you referenced is primarily concerned with exporting the Portfolio View to CSV. This is still not available in QMac 2018.