The answer is still the same. Only the personal exemptions have been eliminated. With the larger standard deductions, it's even more likely that low income people will be able to carry forward the entire capital loss.
Modifying the example above, for the current law:
You have a $12K capital loss carry forward from the previous year. Your AGI is $4000, including the $3000 loss on line 7 (2020 form 1040) . Meaning your income was $7000 before deducting the loss,
$7000
- $12,400 Standard deduction
= 0 Taxable income before capital losses are deducted
The entire $12,000 capital loss can be carried forward.
