Yes, the freeze on the amount of grants has had a significant impact on students. To give you an idea, at present, the amount of the grants isn't harmonized between the three federal granting agencies, nor is the duration of the funding. As a result, there are disparities in award amounts, which can range from as low as $17,500 to as high as $35,000 and even $50,000 for prestigious awards such as the Vanier scholarship.
In fact, we recommend lowering the amount of these prestigious awards to fund more students. These prestigious scholarships are worth $50,000 per year for three years, so we suggest reducing them to the level of the Canada graduate scholarships, which is $35,000. This would allow for more students to be funded, with less of the impact you mentioned, and less financial insecurity.