Straw man argument. Nobody has claimed visa/mc is private. Try steel manning instead.
Discussion
Your claim that bitcoin is as anonymous as cash just because we don't know the full name and home address of a random bitcoin tx implies that visa and mastercard transactions are even MORE anonymous than bitcoin and cash, as there isn't even a public explorer for us to observe transactions taking place and see each other's balances
Your bad faith arguments aren't winning anyone over.
It's simple. Bitcoin has privacy. Just accept that simple fact.
Monero has better privacy, and I hope Bitcoin gets some protocol level updates to try to get closer to where monero is.
Try having an honest conversation with people. Trying to belittle people isn't going to be very effective. Besides, you can avoid looking childish if you talk to people like an adult.
I just jumped in because you said bitcoin has the same anonymity as cash and that's clearly stupid. Nothing beats cash because it's offline, payments never registered or recorded (unless under security cameras), even with serial numbers it can move hands with zero traces.
Bitcoin has privacy is OK to say, and Monero has better privacy, even better. Now we're serious
If even Monero can be traced by chainalysis in some rare cases, like the E-A-E attack, to catch criminals, the main argument that bitcoin is closely watched does hold water and it requires way more effort to "wash" bitcoins under surveillance, but it's obvious that picking a random tx on-chain is not a good example of bitcoin privacy since we're not the ones those participants should be worried about
You can only truly hide the traces if doing large size coinjoins, and in very long time intervals so that your entry bitcoins are about weeks or months apart from when you want to spend them with a bunch of mixes in between
I would agree with most of that before the lightning network existed. Now Bitcoin really is like cash. Both are imperfect and both offer a significant degree of privacy.
If you want more details, I'd suggest the privacy chapter of the book "Resistance Money". It lays it out in great detail, with citations and it includes fun tidbits like that those automated checkouts at stores scan the serial numbers of bills.